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Sarah Cohodes

@cohodes.bsky.social
25K followers 1.2K following 1.9K posts

Associate Professor of Public Policy at the University of Michigan Ford School of Public Policy | co-editor Journal of Public Economics | affiliate NBER, J-PAL, and Blueprint www.sarahcohodes.com

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Sarah Cohodes @cohodes.bsky.social · 09/10/2026
Our plants are pretty verdant despite being in the shadow of two walnut trees. The internet has mixed thoughts. They’re headed to the city compost which I assume is much hotter than the usual backyard pile.
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Sarah Cohodes @cohodes.bsky.social · 09/10/2026
Yes must be. We have one tree in the back and one in the front. We’ve given up on the back yard and are trying to save pedestrians from the front.
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Sarah Cohodes @cohodes.bsky.social · 09/10/2026
The compost cart exceeded the weight limit (250 lbs!) and they didn’t pick it up!
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Education Finance and Policy Journal @efpjournal.bsky.social · 09/10/2026
#FridayFeature: In “Interdistrict Magnet School Openings and Enrollment Dynamics in Nearby Schools,” Yerin Yoon finds that magnet school expansion reduced the share of white students in private schools and increased the share of Free and Reduced-Lunch students in traditional public schools.
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Sarah Cohodes @cohodes.bsky.social · 09/10/2026
only thing taking over in this midwestern state is walnuts. f-ing walnuts are taking over my yard. an entire garbage cart compost bin filled with walnuts. and there are still more in the yard.
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Danielle Edwards @drdsedwards.bsky.social · 08/10/2026
How does school choice policy design matter for effectiveness & equity? Doug Harris, Julie Marsh & I explore this in our new REACH Center paper “The Details Matter: A Systematic Review of School Choice Policy Design and Implementation" reachcentered.org/uploads/tech...
reachcentered.org
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NBER @nber.org · 07/10/2026
Who gains from accelerated math? Letting kids with top 20 percent math scores take algebra and geometry early raises calculus-taking and STEM/business degrees—but effects vary by non-cognitive skill, from David Card and Laura Giuliano www.nber.org/papers/w35847
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Chalkbeat @chalkbeat.org · 06/10/2026
For decades, some Boston students have traveled to suburban schools through Metco. New research finds strikingly large benefits years later.
bit.ly
How a school integration program transformed students’ odds of graduating college
For decades, some Boston students have traveled to suburban schools through Metco. New research finds strikingly large benefits years later.
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Sarah Cohodes @cohodes.bsky.social · 05/10/2026
Reader, I married him
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Sarah Cohodes @cohodes.bsky.social · 03/10/2026
The beginning to the strangest fanfic ever written
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AEFP @aefpweb.bsky.social · 02/10/2026
Good news! The #AEFP2027 submission deadline has been extended! You now have until Monday, October 12, at 11:59 PM PT to submit your proposal. Read the full call: aefpweb.org/callforp...
Graphic reading "Deadline extended" above "52nd Annual Conference, AEFP 2027, San Diego," with a navy silhouette of the San Diego skyline and palm trees against a yellow sky.
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ArtButMakeItSports @artbutmakeitsports.bsky.social · 29/09/2026
Circus Performers, by Walt Kuhn, 1978, 📸 via @marisakabas.bsky.social
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Jen Jennings @jenjennings.bsky.social · 28/09/2026
17 states looked at quadrant 4 and said: i'll take that one. by 26-27, half of US K12 schoolkids will be eligible in a universal voucher state
NY times cost/effectiveness plot of ed reforms
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Nicole Bedera @nbedera.bsky.social · 28/09/2026
The main reason you haven’t heard about campus sexual violence in a few years is because Trump and SCOTUS have made it much, much harder for survivors to come forward. You might vaguely remember that Title IX was a big battleground in his first term. And that we lost.
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Morgan Polikoff @mpolikoff.bsky.social · 28/09/2026
So excited to be launching this request for proposals on state policies to improve k-12 educational outcomes at Arnold Ventures. I'm stoked to be supporting the team in carrying out this RFP. Take a look, share, and send in an LOI www.arnoldventures.org/stories/what...
arnoldventures.org
Arnold Ventures | What State Policies Improve Student Outcomes in…
With student achievement still below pre-pandemic levels and states poised to remake key education policies, Arnold Ventures is launching a new request…
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Sarah Cohodes @cohodes.bsky.social · 28/09/2026
Anyhoo we know a lot about how to make schools work, and have for a long time (see Effective Schools research from the 1970's and 1980's). To me the question is not what to do, but the political will to make it happen and consistent support for the hard slog of making it happen on the ground.
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Sarah Cohodes @cohodes.bsky.social · 28/09/2026
I love when @douglasharris9.bsky.social gets cooking on vouchers. I would say "vouchers are a special-interest carve-out for rich people."
Private school vouchers 
Make all or nearly all families eligible for taxpayer money to pay for private school or home-schooling. For example, $9,000 per student to pay for private school.
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EXPERTS SAID
Most experts described minimal academic benefits for the cost, including because many families who use vouchers are already enrolled in private school. A minority of experts were supportive, citing evidence that competition improves schools writ large.
"The main certain effect will be to substantially reduce costs for wealthy families."
Douglas Harris, Tulane University
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Sarah Cohodes @cohodes.bsky.social · 28/09/2026
Heather Hill is always pithy. I probably said something like: "Many (if not most) schools are good at what they do. Maybe we should let them do more of it."
More learning time 
For example, after-school programs, summer school or year-round school.
EXPERTS SAID
"More minutes equals more learning if those minutes are used for instruction."
Heather Hill, Harvard University
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Sarah Cohodes @cohodes.bsky.social · 28/09/2026
Gift link to the article, where I was one of 37 "experts" www.nytimes.com/2026/09/28/u...
nytimes.com
30 Ideas for Fixing U.S. Schools, Ranked by Experts (Gift Article)
Math and reading scores are in a decade-long slump. We asked three dozen experts: What could turn things around?
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Sarah Cohodes @cohodes.bsky.social · 28/09/2026
Haha, I think I said the same thing as @sarahlenhoff.bsky.social but much less smoothly: "doesn't look like these bans change test scores much, but if it makes everyone's day more pleasant, let's do it!"
Ban student cellphones during school hours.
EXPERTS SAID
Little evidence of impact on test scores so far, but could improve student focus and mental health and teacher job satisfaction.
"The most recent evidence suggests the positive impacts of this aren't as high as we once thought, but I think there are academic and social benefits that are hard to quantify."
Sarah Winchell Lenhoff, Wayne State University
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The Quarterly Journal of Economics @qjeharvard.bsky.social · 27/09/2026
Recently accepted by #QJE: “Busing to Opportunity? The Impacts of the METCO Voluntary School Desegregation Program on Urban Students of Color” by Elizabeth Setren (@elizabeth-setren.bsky.social): doi.org/10.1093/qje/...
doi.org
Busing to Opportunity? The Impacts of the METCO Voluntary School Desegregation Program on Urban Students of Color
Abstract. School assignment policies are a key lever for expanding access to high-performing schools and promoting racial and socioeconomic integration. Fo
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Sarah Cohodes @cohodes.bsky.social · 26/09/2026
Are they going to interview Jonathan Gruber?
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Riley Acton @riacton.bsky.social · 24/09/2026
Thrilled to be organizing this conference with Kalena Cortes, @loismiller.bsky.social, @camilantmorales.bsky.social, & @julia-turner.bsky.social, thanks to generous support from Ascendium! Send us any & all work on CCs! Descriptive, mixed methods, & interdisciplinary research encouraged. 🥳
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Jen Jennings @jenjennings.bsky.social · 21/09/2026
Watching the response to the NHJ article, I’m struck by how, when an unequal system becomes a problem for each family to manage, we focus on how they navigated it, scoring the private choice instead of demanding that the public system remedy the inequality.
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Chantal Hailey @chantalahailey.bsky.social · 21/09/2026
The Nikole Hannah Jones article has invoked a lot conversation on race, school choice for Black families. I’ve been researching how black folks choose schools for 17 years, I have a lot of nuanced thoughts. Long thread. 1/
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Dani Sandler @dismalscientist86.bsky.social · 14/09/2026
The most AI-exposed new college grads have initial employment declines of 5pp and earnings declines of 13%, partially driven by shifts to lower-paying sectors.
How are new college graduates affected by the rise of artificial intelligence, and what can this tell us about the mechanisms behind AI's overall labor market effects? We use administrative records on college graduates to observe how economic outcomes among college majors with differing levels of labor market AI exposure have evolved since large language models became available. We find that post-graduation employment, earnings, and job switching patterns among the most AI-exposed college majors began to diverge immediately following the introduction of ChatGPT in late 2022. In regression-adjusted estimates, the most AI-exposed decile of college majors saw their likelihood of initial employment decline by five percentage points, while full-quarter initial earnings declined by thirteen percent. This earnings decline is comparable in magnitude to the earnings losses associated with graduating into a large recession. Roughly half of the decline in earnings is attributable to lower earnings within the industry sectors that employ these graduates, with the remainder resulting from a shift in the industry mix into lower-wage sectors such as restaurants and retail. The effects attenuate as graduates move further from labor market entry but remain substantial for the most exposed majors. Figure 3: Share employed one-quarter post-graduation 
Notes: Employment share calculated as the fraction of graduates with non-zero earnings for the quarter. Estimates from a regression with institution-major, institution-quarter, and major-quarter of year fixed effects. Standard errors are clustered by college major. Error bars denote 95% confidence intervals. Quarter denotes observation period. November 2022, corresponding to the release of ChatGPT-3.5, marked with a red line. The gray shaded region identifies cohorts who graduated after the release of ChatGPT-3.5. Number of observations: 5,685,000. All results were approved for release by the U.S. Census Bureau, authorization number CBDRB-FY26-CES011-011.
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Michael Clemens @mclem.org · 12/09/2026
The US President's new proposal to tax international students has been approved by the White House for release this week. It's an unprecedented $100,000 tax on int'l grads who stay to work after graduation on Optional Practical Training (most grads do), a crucial bridge to remaining by any channel.
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NBER @nber.org · 13/09/2026
Foundational expertise may be a prerequisite for extracting durable skill from AI-assisted practice, from David Autor, Tanya Rodchenko, Josh Martin, Zanna Iscenko, Scott Strand, David Pearl, and Melissa Ferere www.nber.org/papers/w35720
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Brown University Department of Education @brownedudept.bsky.social · 09/09/2026
Please join us in celebrating Dr. Lindsay Page as she steps into her new role as Chair of Brown's Department of Education. 👏 education.brown.edu/news/2026-09...
education.brown.edu
Leading Brown’s Department of Education: A Conversation with New Chair Lindsay Page
Dr. Page discusses her new role as Department Chair, the colleagues who shaped her first five years at Brown, and the impact of generative AI on teaching and learning.
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Ethan Bergmann @ethanbergmann.bsky.social · 08/09/2026
Updated draft: In June 2022, the Dobbs v. Jackson Supreme Court decision overturned Roe v. Wade, sending abortion regulation back to states. Within months, bans were enforced in some states while others expanded protections. I study how these bans affected the practice locations of OBGYNs. 🧵
Screenshot of front matter.

The Impact of Abortion Bans on the Physician Labor Market: Compositional and Pipeline Effects*

Ethan Bergmann†

August 28, 2026

[Most recent version here]

Abstract

I study the physician labor market after Dobbs, which allowed states to enforce abortion bans. I link quarterly obstetrician-gynecologist (OBGYN) locations to political contributions and use synthetic difference-in-differences to compare provider supply and migration between total-ban and abortion-protecting states. I find no aggregate supply decline. However, this stability masks compositional changes: relative per-capita supply falls for female, early-career, top-ranked, and Democratic-donating providers, while male and unranked supply increases. These shifts are more consistent with workforce entry and exit than migration by existing providers. Together, Dobbs polarized the U.S. OBGYN workforce, with implications for reproductive-care access and future supply.

JEL Codes: I11, I18, J44, J61
Keywords: abortion policy, physician labor markets, political sorting
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Sarah Cohodes @cohodes.bsky.social · 07/09/2026
My 9yo is reading an academic monograph on prehistoric cats 🤷🏻‍♀️ My 3yo is trying to recreate Timmy Fell Down the Well with our egress window 🤦🏻‍♀️
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Sean Corcoran @seanpcorcoran.org · 06/09/2026
Finally read this article on the rapid growth of the Alpha School under the Texas school voucher program--only after the state's charter board rejected its (dubious) model. ProPublica is really doing outstanding work on how voucher programs are actually playing out on the ground.
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Joshua Goodman @joshua-goodman.com · 31/08/2026
🚨New working paper alert!🚨 Private tutoring chains like Kumon and Sylvan have grown rapidly. Who uses them? Do they improve kids' skills? BU econ PhD student Samuel Nitkin and I provide answers in: "Kumon Up: Private Tutoring Centers and Student Achievement" www.nber.org/papers/w35671 1/?
Private tutoring chains like Kumon and Sylvan have expanded rapidly in recent decades.
Combining data on business locations, household spending, and district test scores, we study who
uses these centers and how they affect academic skills. Nearly half of tutoring users are from the top
income decile, with Asian and White households five and two times as likely to purchase tutoring as
Black and Hispanic households. A staggered differences-in-differences design shows the opening
of a district's first chain center raises district-wide math and reading scores by 0.02-0.03 standard
deviations, at a much lower cost than public spending typically producing similar gains. Math
effects are largest for White and Asian students, so that center entry widens racial achievement
gaps, though less so in more racially integrated districts. These private investments help their
users, deepen educational inequality, and shape outcomes by which state accountability systems
and families judge schools.
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Robert Kelchen @robertkelchen.com · 27/08/2026
My department is searching for an assistant professor of PK-12 educational leadership to begin in fall 2027. We're looking for a great teacher, scholar, and colleague to join our growing department, and expertise in special education is a plus. Application review begins October 15. Please share!
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Robert Kelchen @robertkelchen.com · 24/08/2026
Here are some of the declines in international student applications and enrollment revealed in a lawsuit challenging new duration of status regulations that would limit the ability to offer some programs of study and create administrative bloat on campus. www.insidehighered.com/news/global/...
Institution	Grinnell College
Enrollment data	15.8 percentage point decline in international student yield from fall 2023 to fall 2026
Institution	University of Illinois Chicago
Enrollment data	50 percent decline in admitted international students over historic levels
Institution	University of Illinois Urbana-Champaign
Enrollment data	25.1 percent decline in international graduate applicants from 2025 to 2026 cycle
Institution	University of Maryland, Baltimore
Enrollment data	37.9 percent decline in new international student enrollment from fall 2024 to fall 2025. Thirty-two students admitted for fall 2026 have withdrawn applications, and 14 have requested to defer their admission.
Institution	University of Maryland, College Park
Enrollment data	anticipated 30 percent decline in new international graduate students year over year
Institution	University of Wisconsin–Madison
Enrollment data	10.9 percent year-over-year decline in undergraduate applications, and 27 percent year-over-year decline in graduate applications. Five undergraduate students who put down deposits have since withdrawn.
Institution	University of Wisconsin–Milwaukee
Enrollment data	42 percent decrease in applications, 29 percent decrease in admissions and 38.7 percent decrease in enrollments year over year
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Sarah Cohodes @cohodes.bsky.social · 20/08/2026
Tilting at windmills
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Sarah Cohodes @cohodes.bsky.social · 20/08/2026
While I believe the University can support individual faculty members on repositioning their research, I think the most important thing it can do is to work with other universities to fight administration policies that are undermining the entire higher education enterprise.
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Sarah Cohodes @cohodes.bsky.social · 20/08/2026
but what about the pipelines for PhD students? International students? What about the basic science that needs to get done? What about the research infrastructure that the Feds supported (like data collection) that now will not be supported?
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Sarah Cohodes @cohodes.bsky.social · 20/08/2026
cannot do anything for the more fundamental issue: sea change in terms of federal support for science and a dissolution of the bargain that has made the United States a premier destination for research since WWII. Sure I can figure out how to pivot my little project,
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Sarah Cohodes @cohodes.bsky.social · 20/08/2026
They sent around a little survey about research in the current era, and ooh boy, did I have some thoughts for the open response box at the end: While I personally have had a lot of luck with foundation funding as a substitute for federal funding, all of this creative/bootstrap work
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Sarah Cohodes @cohodes.bsky.social · 18/08/2026
(though that probably goes without saying)
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Sarah Cohodes @cohodes.bsky.social · 18/08/2026
And the 2nd one to clean up after men
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Walt Ecton @waltecton.bsky.social · 17/08/2026
The Center for the Study of Higher and Postsecondary Education @ Michigan is hiring for an associate or full professor of higher education policy, with expertise in quantitative methods! careers.umich.edu/job_detail/2...
careers.umich.edu
Associate or Full Professor of Higher Education with Tenure | U-M Careers
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Riley Acton @riacton.bsky.social · 14/08/2026
The median college student enrolls at an institution 17 miles from home
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Matthew A Kraft @matthewakraft.com · 06/08/2026
Brown just opened a cluster hire for two tenure-track positions in Education Policy. Come join our vibrant community of scholars at @brownedudept.bsky.social & @annenberginstitute.bsky.social! apply.interfolio.com/190527 Please help spread the word.
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Ben Rosen @benrosen.bsky.social · 05/08/2026
i know votes are still being counted but the more i look at this michigan senate map the more it becomes clear that it kind of looks like a mitten
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Laura K Gee @laurakgee.bsky.social · 04/08/2026
Exciting to see my work with @olgastoddard.bsky.social @kbuzard7.bsky.social featured outside the hallowed halls of academia 😴😴😴 Thanks so much to @theconversation.com for highlighting the downsides of being the “default parent” as many return to school this month theconversation.com/better-call-...
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Joshua Goodman @joshua-goodman.com · 04/08/2026
Want to see in real time what's been happening to public school enrollment in your school district? Through @wheelockpolicybu.bsky.social, we've just released a school enrollment tracker for Massachusetts, allowing you to explore the data yourself. wheelockpolicycenter.org/high-quality...
wheelockpolicycenter.org
Massachusetts School Enrollment Dashboard
This interactive dashboard examines the gap between the predicted and actual enrollment in Massachusetts public, private, charter, and home schools.
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AEA Journals @aeajournals.bsky.social · 04/08/2026
Forthcoming in AEJ: Applied Economics: "Education and Partisanship" by Daniel Firoozi.
aeaweb.org
Education and Partisanship
(Forthcoming Article) - Education weakens the historical link between income and partisanship across democracies, challenging classical models of political economy. Using administrative data on millions of voters exposed to discontinuities in compulsory schooling laws and college admissions in Florida and California, I show that both the extensive margin of years of high school education and the intensive margin of college selectivity can reduce Republican Party affiliation. Effects generalize across generations (1969 to present), settings, and institutions. Results are consistent with peer socialization shaping sociocultural attitudes alongside career-path mechanisms, rather than deliberate instructor-driven persuasion.
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Sarah Cohodes @cohodes.bsky.social · 03/08/2026
Thank you for sharing the sad news. He was one of my dad's (Don Cohodes) mentors at Minnesota in the mid-70's.
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