Welcome to the Profit of Education website. Continuing the conversation begun in the book Profit of Education, we discuss the latest economic evidence on education reform.

Schools, black children, and corporal punishment

Today’s post appeared on the BROWN CENTER CHALKBOARD at the Brookings Institution. A story on the post appears in the Washington Post.

As we approach the annual celebration of Dr. King’s life, it is worth examining the difference in how our schools discipline black and white children. In public schools in the United States, black children are twice as likely as white children to be subject to corporal punishment. Figure 1 shows the comparison, derived from nationwide data reported by schools to the Office of Civil Rights, Department of Education.[1] (All data is for the 2011-2012 school year, the latest year available.) The continuing disproportionate corporal punishment of black children is a reminder that some aspects of the “bad old days” are not fully behind us.

Incidence of corporal punishment per 100 students, annual rate

Figure 1

The 42,000 reported incidents of black boys being beaten, and 15,000 incidents for black girls, by educators in their school reflects two facts. First, black students are more likely to be located in states that use corporal punishment extensively. Second, in many states black students are disproportionately likely to be singled out for corporal punishment. Figure 2 shows the annual incidence of corporal punishment by state, with states where the incidence is less than once per ten thousand students greyed out.

Annual incidents of corporal punishment per 100 students

Figure 2

While corporal punishment is used in almost every state, seven states account for 80 percent of school corporal punishment in the United States: Mississippi, Texas, Alabama, Arkansas, Georgia, Tennessee, and Oklahoma. [2] For black students, six of these states (Mississippi, Alabama, Georgia, Arkansas, Texas, and Tennessee) plus Louisiana account for 90 percent of corporal punishment. One reason that black students are subject to more corporal punishment is that they live in those states responsible for most of the corporal punishment of all children.

Where is corporal punishment racially disproportionate? Essentially, and sadly unsurprisingly, the first answer is that black students are disproportionately beaten in parts of the Deep South. Black students are twice as likely to be struck as white students in North Carolina and Georgia, 70 percent more likely in Mississippi, 40 percent more likely in Louisiana, and 40 percent more likely in Arkansas. Figure 3 shows the ratio of the frequency of corporal punishment for black students compared to the frequency for white students, with states where the incidence is less than once per ten thousand students or where the rate is equal or lower for black students greyed out.

States with disproportionate corporal punishment relative probability of punishment black vs white students

Figure 3

Some high corporal punishment states are not particularly racially disproportionate. Texas, notably, uses corporal punishment on black students and white with equal likelihood. Texas shows up on the lists of where black students are hit because it is a large state that administers corporal punishment at a moderately high rate. Alabama—where the rate of corporal punishment is 10 times the national average—also shows equal rates of black and white children experiencing physical violence from educators. In North Carolina, black students are twice as likely to be struck as white students, but North Carolina uses corporal punishment relatively infrequently and so accounts for a small proportion of punishment of black students. Notably, in South Carolina the rate of corporal punishment is below the national average and is not racially disproportionate.

While heavy use of corporal punishment is more common in states of the former Confederacy, racially disproportionate application happens in northern states as well. Schools in Pennsylvania and Michigan are nearly twice as likely to beat black children as white, although both have low overall rates of corporal punishment.

Perhaps most surprisingly, corporal punishment in Maine is wildly disproportionate—with black children being eight times as likely to be hurt as white children. Colorado, Ohio, and California also have rates of corporal punishment for black children that are 70 percent or more higher than for white children.

In Figure 4, I show rates of corporal punishment for white students on the horizontal axis and for black students on the vertical axis. States above the 45° line in Figure 2 have racially disproportionate corporal punishments. The states clustered at the lower left of the graph have relatively lower rates of corporal punishment, sometimes disproportionate and sometimes not.

Mississippi stands alone.

Corporal punishment per 100 students

Figure 4

While the symbolism of continued physical violence against black children is inescapable, the disproportionate application of other forms of discipline may be of even greater concern. Except in Mississippi and Arkansas, the typical black student will probably not be subjected to corporal punishment during his school career. In contrast, school suspensions are much more common. Figure 5 shows rates of suspension by race.

Suspensions per 100 students

Figure 5

Note that an astounding 15 percent of black students receive an out-of-school suspension in a given year, a rate nearly 4 times that of white students; in-school suspensions are more than twice as likely among black students. Figure 5 shows out-of-school suspension rates for black and white students by state.

Out-of-school suspensions per 100 students

Figure 6

Out-of-school suspensions are applied disproportionately in every state—all points are above the red line. And these discipline patterns do not line up with old geographic patterns. The highest suspension rates for black students are in Wisconsin. And the greatest disparities (measured as the ratio of black-to-white suspension rates) are in the District of Columbia.

Every time a child is beaten in school and every time one is suspended and thus loses learning time, something or someone has failed that child along the way, regardless of the “reason” for the punishment. So long as these failures fall disproportionately on black children, we are not yet living up to the dream that “children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.”


Discipline per 100 students
Corporal punishment Out-of-school suspension
Black White Black White
Alabama 3.583033 3.869057 17.90929 5.468595
Alaska NA 0.103160 8.592955 3.645956
Arizona 0.029171 0.050941 12.32562 4.555046
Arkansas 5.897032 4.205989 18.15124 4.832772
California 0.051100 0.029146 14.44344 4.803916
Colorado 0.057981 0.022656 11.12507 3.413624
Connecticut 0.030811 0.025587 12.19697 2.117891
Delaware 0.000000 0.000000 18.50083 5.836653
District of Columbia 0.059520 0.000000 16.31737 0.872663
Florida 0.197324 0.239999 19.85793 8.790211
Georgia 1.125453 0.577535 16.07318 4.434872
Hawaii 0.000000 0.000000 1.538462 1.145156
Idaho NA 0.036444 5.891822 2.945636
Illinois 0.031373 0.038082 15.35005 3.406990
Indiana 0.063847 0.062103 20.57063 5.230889
Iowa 0.022850 0.061744 15.22203 2.656221
Kansas 0.011166 0.013882 12.80741 2.792517
Kentucky 0.048563 0.190368 13.02577 4.424482
Louisiana 0.759494 0.537434 13.41064 5.476110
Maine 0.432043 0.057917 8.010801 3.839565
Maryland 0.000000 NA 8.901257 3.729914
Massachusetts 0.004890 0.015254 10.63718 3.376658
Michigan 0.179947 0.090549 20.77535 5.397792
Minnesota 0.030967 0.028806 13.56956 2.204543
Mississippi 8.059325 4.747161 15.36107 5.419384
Missouri 0.683648 0.553408 20.52077 4.393734
Montana 0.000000 0.043081 5.335968 3.311940
Nebraska 0.019723 0.028463 18.29791 3.194068
Nevada 0.000000 NA 12.38813 4.214409
New Hampshire 0.000000 0.051235 13.11094 5.099147
New Jersey 0.018340 0.016058 11.39809 2.773110
New Mexico 0.088313 0.007161 10.81837 4.902616
New York 0.022768 0.031960 6.698778 3.031192
North Carolina 0.045919 0.022889 16.71766 5.230456
North Dakota NA 0.043300 2.846739 1.343501
Ohio 0.054495 0.028990 18.37799 4.323960
Oklahoma 0.937784 1.650464 15.15327 4.706784
Oregon 0.000000 0.006020 11.93396 4.788382
Pennsylvania 0.199160 0.099676 17.13759 3.469501
Rhode Island NA NA 16.29604 6.434000
South Carolina 0.021752 0.020802 17.06215 6.371353
South Dakota 0.116550 0.121998 8.071096 2.184158
Tennessee 1.020022 1.148149 19.35562 4.376236
Texas 0.825640 0.843602 12.84153 2.717089
Utah NA 0.004343 6.567593 1.978244
Vermont 0.000000 0.030065 6.702997 4.289775
Virginia 0.020342 0.017897 14.10793 4.615755
Washington NA 0.001729 11.65880 4.614335
West Virginia 0.143052 0.133395 17.50681 7.994511
Wisconsin 0.010465 0.027360 25.60784 2.697800
Wyoming 0.000000 0.016005 8.499234 3.295765

Discipline per 100 students is 100 times the ratio of discipline of a particular type reported for all students of a given race to the corresponding overall enrollment figures given by the Office of Civil Rights, for 2011-2012.


[1] The Office of Civil Rights collected data from all U.S. public schools. The data used here is aggregated to the state and national level by the Office of Civil Rights and can be found at http://ocrdata.ed.gov/StateNationalEstimations/Estimations_2011_12. Data is reported either directly by school districts or by states’ education agencies on behalf of the districts. Data on corporal punishment may count multiple incidents for a single student as multiple occurrences. According to the Office of Civil Rights, “Corporal punishment is paddling, spanking, or other forms of physical punishment imposed on a student.” Data for suspensions reports counts of students with multiple out-of-school suspensions as a single incident. Because all data is self-reported, it is not known whether all districts use the same standards in reporting.

[2] According to the Gundersen National Child Protection Training Center corporal punishment in schools is banned in most states. While most states do not permit corporal punishment in schools, they nonetheless report that schools beat children. Only Delaware and Hawaii report no corporal punishment. Corporal punishment is also rare in Maryland and Nevada, with fewer than three instances reported.

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Brown Center Chalkboard

Dear reader: As you may have surmised from recent posts, I’ve moved my writing to the Brown Center Chalkboard of the Brookings Institution. Hope to see you there!

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Professional non-development: Do teacher development programs work?

Today’s post appeared on the BROWN CENTER CHALKBOARD at the Brookings Institution.

Do professional development programs for teachers actually develop better teachers? Should the large amount of money spent on teacher development be re-directed to better uses? “The Mirage: Confronting the Hard Truth About Our Quest for Teacher Development,” released this summer by TNTP (aka “The New Teacher Project”), raises serious questions about whether the entire teacher development enterprise should be abandoned.

“The Mirage” raises three issues based on an in-depth exploration of teacher development programs in three large, public school districts and one charter management organization. The report begins by looking for evidence on whether professional development works; i.e., Do teachers become better as a consequence? The second question examined is whether teachers think development works. Then finally, and perhaps most surprisingly, “The Mirage” looks at the dollars spent on professional development and finds that the costs are shockingly high.

Does professional development for teachers work?

Since the districts studied engage in large-scale teacher development programs, one might expect the result to be that teachers to improve over time. Using overall evaluation scores according to each district’s own metric, the study finds no evidence that teachers improve. It’s worth pointing out this is not the first study to come to this conclusion.[1] To state these a little more carefully, teachers typically improve substantially for their first few years in the classroom, with a flat trajectory thereafter—despite spending time in development activities. You can see what happens in this figure taken from The Mirage.

Average teacher performance by experience

Source: Figure 5, “The Mirage”

In order to drill down into the data, the authors of “The Mirage” labelled teachers as “improvers” or “non-improvers.” They ran the classifications a number of different ways, but always relying on each district’s teacher evaluation metric . Notably, the authors did not rely on value-added scores alone.

While overall performance is flat, might we be seeing a mix between improving teachers who received a lot of development support and non-improvers who didn’t? Apparently not. Improvers and non-improvers look pretty much the same when it comes to teacher development. “The Mirage” compared the frequency of a variety of development activities for improving teachers and others. Teachers who didn’t improve spent pretty much the same time being developed as those who did improve.

Frequency of Development Activities
Improvers Non-improvers
Number of times observed over two years 8 7
Hours of coaching over two years 12 13
Hours of formal collaboration over two years 69 64
Hours spent per month in professional development 17 18

Source: Figure 7, “The Mirage”

As the saying goes, absence of correlation does not prove absence of causation. Maybe teachers need ongoing training just to keep from getting worse, although I’m not aware that anyone has made such an argument.

Is it even true that teachers think that professional development activities work? Basically, not so much, according to TNTP. Only half of teachers agreed with the statement that professional development “drives lasting improvements to my instructional practice.” What’s more, nearly half of teachers whose performance did not improve also thought that development “drives [apparently nonexistent] lasting improvements.” In fact, fewer than 45 percent of teachers thought professional development “is a good use of my time.”

How much money is spent on teacher development?

You may—or may not—be surprised at evidence that teacher development basically doesn’t work. What I think you will be shocked by, as I was, is how much is actually spent on teacher development. The headline number from The Mirage is that the three districts they studied spend on average $18,000 a year per teacher on professional development. To give context to $18,000 a year, average teacher salaries are around $56,000. In other words, the cost of development is just a bit under a third of the cost of salaries. That is a very large amount of money. It is an especially large amount of money to spend absent clear evidence of results. It is a disturbingly large amount of money to spend in light of evidence that there are no results, according to “The Mirage.”

Where is all this money going? “The Mirage” does not break down the totals, but does give considerable background on what went into the calculations. The authors provide “low,” “middle,” and “high” cost estimates. The $18,000 headline number is the middle figure; the low end is $13,000 and the high end is $20,000.[2] As an example of the difference, the salary bump that comes with a master’s degree is included in the middle and high figures, but not in the low estimate. Paying for a higher degree is certainly a real cost, although perhaps not the first thing that comes to mind when one thinks of a district’s support of “professional development.” But getting a master’s degree does share something with the rest of findings in “The Mirage”—we know that it doesn’t improve teaching.

Teachers spend time equivalent to almost 10 percent of the school year in professional development. Of this time, five to 10 school days each year are devoted to mandated development activities; the remainder is spent on self-initiated activities. So a non-trivial part of the cost of professional development is simply salaries and benefits for teacher time. But the larger fraction is paying for the time and resources of everyone else engaged in development. In fact, “The Mirage” compares the cost of staff training in schools (excluding the part that goes to teacher salaries and salary bumps) to the costs in other large organizations and reports that schools spend four to 15 times more than non-school organizations on staff training. One might speculate as to whether the high levels of spending by schools reflect a set of vested interests in the teacher development biz, but so far as I know there isn’t any evidence on why schools spend so much on training.

Professional development seems like an obviously good idea. Indeed, after writing “we found no set of specific development strategies that would result in widespread teacher improvement,” the authors of “The Mirage” argue “that doesn’t mean we should give up.” Well maybe we should give up. Or at least, maybe we should cut way, way back on what we spend on professional development and devote the freed up funds to higher teacher salaries and more hours in which classroom teachers are in class with their students. In my bookProfit of Education, I argued that the single most important education “reform” would be to pay teachers more…a lot more; my ballpark figure is 40 percent more. The considerable funds now spent, apparently ineffectively, on improved teacher development would be a good down payment towards improved teacher salaries.

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Are we facing a nationwide teacher shortage?

Today’s post appeared on the BROWN CENTER CHALKBOARD at the Brookings Institution.

Here’s a question to consider: Are teacher shortages…

A. Real?
B. Imaginary?
C. Both?
D. Neither?

Are we facing a nationwide teacher shortage? What do we mean by “shortage”—or, better, what should we mean? Let’s put some numbers on the Chalkboard, and then back up a bit and ask whether we’re asking the right questions.

Education degrees and hires of new and recent graduates

The figure shows the annual production of bachelors and master’s degrees in education. The most recent numbers are about 270,000 degrees per year. Compare this to the number of new teacher hires of current or recent graduates, which ran just under 150,000 in 2007. (New hires data courtesy of Dan Goldhaber, from the new CALDER Explainer “Missing Elements in the Discussion of Teacher Shortages.”) While the new hire data is only available every few years (it’s derived from the School and Staffing Survey (SASS)), we can take an educated guess that the low 2011 square is an anomaly and that the number of new hires is now back up at about pre-recession levels.

Conclusion from the graph? The green line is way above the black squares. We learn that we’re producing two or three times the number of teachers that we currently need. If that’s right, resources are being wasted.

Of course, not all teachers have degrees from education schools. So I took a look at numbers from the most recent SASS. 80 percent of teachers have a BA from an education school. Of those who don’t, 76 percent have a master’s from an ed school. So the fraction of teachers without any kind of ed degree is


This number is a little rough as it comes from one survey taken at single point in time, but it’s safe to say that there are only a few people becoming teachers without some kind of education degree. So while new supply is actually higher than the green line, it’s not all that much higher.

However, most master’s degrees in education go to teachers who want further training or who want the pay bump that comes with a graduate degree. While we don’t know the educational background of graduate students in education, we can use the most recent SASS to find out how many teachers who got MAs in education already had a BA in education. The answer is 76.4 percent.

Suppose we take, as a ballpark number, that all but a quarter of MAs in education are “redundant.” This does not mean that they aren’t valuable, just that they aren’t adding to the number of new teachers produced. I’ve made this adjustment in this next graph, lowering the number of “first ed” masters as well as the total. With this adjustment, the production of first-time education degrees has been pretty flat at about 145,000. That’s somewhere around the number of newly hired teachers. In other words, the flow of new teachers supplied each year is roughly the same as the demand for new teachers.

Estimates of First Education Degrees and hires of new and recent graduates

In the short run, newly trained teachers are not the only source of supply. Slots can also be filled by hiring back experienced teachers who have left the profession temporarily. In fact, something like half to two-thirds of openings are filled that way. But in the long run, the annual supply has to meet or exceed the annual demand. We may be moving closer to a national teacher shortage than it first appears.

Now let’s turn to the question of whether talking about a “national teacher shortage” even makes any sense.

You can have a shortage in specific kinds of instructional needs, STEM teachers for example, or shortages in particular areas of the country, without there being a national shortage. On the first point, the “Missing Elements” CALDER Explainer shows that teacher production for both STEM and special education has been relatively flat for a very long time. With regard to geographic variation, Chalkboard reader Jason Dyer comments “Oklahoma has given out 842 [emergency certificates] this year alone, more than the last four years combined).” Dyer goes on to point to current teacher shortages in Nevada as well as Oklahoma.

In other words if you’re a principal trying to hire for a specific slot and not getting any applicants, words about overall national availability provide little comfort.

The second point is that discussing quantity without discussing quality is a mistake. Oklahoma only has about 41,000 teachers. If the state issued emergency certificates in a single year to more than two percent of the teacher corps, one can’t help but worry if teacher quality is at risk.

The U.S. can always get “enough” teachers. Just lower standards enough. On the flip side, even when we produce more than enough bodies to fill classrooms, that doesn’t demonstrate that all or most of the new teachers have the skills and drive for the tough job of running a classroom.

In the private sector, salaries get adjusted to get enough, good enough employees. That doesn’t happen in public schools. Rather than talking about shortages in terms of body count, we should be asking whether we are producing (and retaining) enough really, really good people in the classroom. Quantity matters when it comes to teacher supply, but it’s a mistake to talk about quantity without talking about quality at the same time.

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Student teaching: Can we leverage the recent teacher “shortage” to students’ advantage?

Today’s post appeared in THE BROWN CENTER CHALKBOARD at the Brookings Institution.

A possible teacher shortage has been much in the news—in California, for instance, the number of new credentials has fallen by about half since 2004, while K-12 enrollment stayed roughly flat. (Take a look at Paul Bruno’s July Chalkboard.) Whether this is a transient, post-Great Recession blip, or if it’s a major trend is not yet clear. It’s hard to say just yet what fewer teacher candidates means for teacher quality, because we don’t know much about how the characteristics of people getting certified has changed, or whether or not schools are having more trouble finding good candidates. However, I’d argue that the drop-off in credentials actually creates an opportunity to raise teacher quality through another channel: improvements in student teaching.

A chance to trade off lower quantity for higher quality

As I discuss below, evidence suggests that a high-quality student teaching experience is valuable in getting a new teacher off to the right start. But people who’ve looked at the question tell me that practice teaching is currently over-subscribed and under-managed—there aren’t enough high-quality slots available, and as I describe below, standards are low.  The current drop in the number of new teaching credentials, at least some of which have historically gone to people who never end up teaching, makes it more likely that new teachers will get the chance to learn from a top-notch mentor.

In short: Fewer teacher candidates vying for limited student teaching slots could mean better prepared newbie teachers. If education programs take the opportunity to shore up their requirements, the teacher “shortage” could in part translate into a tradeoff of smaller quantity for higher quality.

Student teaching: Exploring the data (and the lack thereof)

A first question might be “Is a high-quality student teacher experience important?” Very little data exists on student teaching experiences and outcomes. But, the available scientific evidence on the topic suggests that the answer is yes.

Donald Boyd and colleagues looked at teachers in New York City schools. They found that oversight of student teaching assignments by a teacher candidate’s program led to notably better outcomes (measured by value-added scores) in the first year of teaching. “Oversight” here meant that the cooperating teacher had a minimum amount of teaching experience and was selected by the program, and that a program supervisor made at least five observations of the student teaching. The gain from oversight held for both math outcomes and English language arts. Unsurprisingly, the effect did not seem to persist into the candidate’s second year on the job.

Boyd and colleagues also looked at whether simply having any student teaching experience at all mattered. Student teaching did matter for the first year of teaching math, with results being mostly inconclusive for English language arts.

State regulations of student teaching

Now, given that good practice teaching is valuable, do all students in education programs get such an experience? The answer appears to be no.

Here too, the data is very limited. I’ve put together a few pieces that are available; the news is not reassuring.

I had assumed practice teaching was a more-or-less universal requirement. (I was wrong.) Here are three questions about state regulations. See what your guesses are before looking at the answers.

How many states require:

  1. Student-teacher placements of at least 10 weeks?
  2. Placements represent a full-time commitment for the student equal to at least 12 credit hours?
  3. Supervising teacher must have at least three years of experience?

The answers, from the National Center on Teacher Quality’s (NCTQ) “Student Teaching in the United States”:

  1. 10 week placements: 27 states.
  2. At least 12 credit hours: 18 states.
  3. Experienced cooperating teacher: 11 states.

State regulations don’t necessarily describe actual practice, of course. Regulations are a minimum that we expect many programs to exceed. For a more direct look at what education schools do, I looked at a different metric on student teaching. Using NCTQ data, I calculated what fraction of education programs in each state are rated by the NCTQ as requiring a “capable mentor” for student teachers. (The NCTQ defines a “capable mentor” as one “possessing demonstrated mentorship skill or having taken “a substantial mentorship course/”) The following map ranks each state from yellow (most programs do require a capable mentor) to blue (they don’t).

Fraction of programs requiring capable mentors for student teachers

Source: NCTQ, personal communication

One doesn’t see a whole lot of yellow or orange.

Making the tradeoff

It’s tough to find qualified teachers to mentor candidates through the vital step of practice teaching. If we find ourselves training fewer teacher candidates, education schools should presumably have a better shot at arranging high-quality practice teaching placements. This is especially true for schools that train a fair number of undergraduates who do not end up taking teaching positions. The available good practice teaching positions won’t have to be spread quite so thin.

When it comes to teaching, most people will argue that quality is more important than quantity. If having fewer students vying for teaching posts increases the fraction of new teachers who start their career coming off a well-mentored student teaching experience, the result of a teacher “shortage” might be less worrisome than people think.

Editor’s note: This blog post was updated on October 15, 2015 with a new version of the included map. 


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ProfitOfEducation is going on break for the summer. Hope to see you back in the new school year!

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College graduation

While this blog is mostly about K-12 education, some of the rhetoric you hear nowadays tends toward the idea that the goal of K-12 is “college readiness.” Regardless of whether you’re in agreement with “college readiness” as an over-riding goal, I’d like to point out that being ready to start college is an entirely different kettle of fish from being ready to complete college.

Here’s a graph showing the fraction of students who complete a 4-year degree within 5 years of having started a 4-year college, the horizontal axis giving the year in which the students entered college.

5 year graduation rates

You’ll see that the numbers are up. But that means that about half of entering men, and a moderately higher fraction of women, actually complete their degree. More than a third don’t.

What do you think of the following: High schools should not only report how many of their students they send off to college; they should also report how many complete their degree.

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One Response to College graduation

  1. Nordy says:

    What do you think of the following: High schools should not only report how many of their students they send off to college; they should also report how many complete their degree.

    Would that really tell you anything about the education provided by the high school? My sense (would like to have hard data to back up), is that most college dropouts are due to external, non-academic factors. I don’t know that a high school should be held responsible if a former student is unable to pay bills, or develops a drinking problem.

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Large districts

Here’s a factoid that I hadn’t known. Public school students are quite a bit more likely to attend school in a large school district than was true in the past. I’ve made a little chart showing the percentage of students in districts with over 10,000 pupils.

students in large districts

In 1979, 46 percent of students were in large districts. Today (well 2011, which is the latest data), the number has risen to 55 percent. At the same time, the number of very small school districts–those with fewer than 300 kids–has fallen by a third.

Much of this may just be a consequence of population growth. To some extent we’d expect all districts to have more students in the past. It turns out that there’s something more than that going on, as the number of school districts has fallen 15 percent over the same period.

I’m pretty sure that closing very small districts is mostly a good thing. They’re probably too small to be efficient. But is it a good idea to have more students in mega-districts? Or is there a sweet spot somewhere in-between tiny and mega?

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Applicant Hiring vs Performance

I had the pleasure this week of hearing Jonah Rockoff talk about a paper he’s written with several colleagues, “Teacher Applicant Hiring and Teacher Performance: Evidence from DC Public Schools.” My impression is that in general school districts do a lousy job of selecting the best future teachers from the available applicant pool. Or maybe it would be more accurate to that some districts do well at this and others do a terrible job. From the researcher’s vantage, it’s been very hard to identify factors that do a good job of predicting who’s going to be a good teacher. That makes it hard to give advice to school districts.

Rockoff and colleagues were given access to hiring data on a large number of applicants to Washington, DC schools. They also were given data on how well hired applicant performed according to DC’s Impact rating system. What they found was that DC had collected data on several factors that did a pretty good job of predicting who would turn out to be a good teacher, but scores on these factors played very little role in deciding who would actually be hired.

Here are some things that do predict teacher success according to the DC data:

  • Undergraduate academic performance, including
    • GPA
    • SAT/ACT scores
    • college selectivity
  • Application data, including
    • score on a subject-specific written essay
    • interview score
    • teaching audition

But perhaps the most interesting predictor is the score on what’s called the “Haberman test.” A number of years ago, Martin Haberman interviewed good teachers and then created a multiple choice test intended to pick out applicants with attitudes that matched those of the good teachers. Rockoff and coauthors find that the Haberman test really does do a good job of predicting teacher success. And oh yeah, the test is available on the web and costs all of five dollars to administer.

So it seems that schools could do a better job of picking good teachers with relatively little difficulty. Along those lines, I’ll close with the opening quote from the paper.

The best means of improving a school system is to improve its teachers. One of the most effective means of improving the teacher corps is by wise selection.

-Ervin Eugene Lewis, Superintendent of Schools, Flint, Michigan, 1925

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8 Responses to Applicant Hiring vs Performance

  1. RT @CharlesBarone: Schools could do a better job of picking good teachers with relatively little difficulty. HT @MrPABruno http://t.co/ogqs…

  2. RT @MrPABruno: “it seems that schools could do a better job of picking good teachers with relatively little difficulty” http://t.co/z3D5NjN…

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Why do private schools need so many new teachers?

Roughly 12 percent of teachers work in private schools. But more than twice that fraction of new teachers, 28 percent, work in private schools. (Numbers are from the Digest of Education Statistics. They’re probably not perfect, but I suspect they’re close.)

All vs new teachers

Why do private schools have to hire relatively more teachers? It’s not that private schools are growing faster than public schools. It’s not that private school teachers move around more, because a move from one private school to another doesn’t count as being “new” in the government data.

My guess is that being a private school teacher isn’t so attractive as being a public school teacher (on average, obviously lots of exceptions)–so there’s just more turnover. Alternatively, it could be that private schools kick out more teachers and so need to do more hiring. Surely that can’t account for such a huge difference.

There’s no reason why the rate of new teacher hiring should be exactly the same for public and private schools. But this different?

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2 Responses to Why do private schools need so many new teachers?

  1. “12% of teachers work in private schools…more than 2x that fraction of new teachers, 28%, work in private schools” http://t.co/eiLDYIpMev

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