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Thomas S. Dee

@tomdee.bsky.social
1.9K followers 1.1K following 141 posts

Barnett Family Professor, Stanford University 🌲 Senior Fellow, @hooverinstitution.bsky.social & @siepr.bsky.social Research Associate, @nber.org dee.stanford.edu #GoBirds 🦅

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Reposted by Thomas S. Dee
Annenberg Institute @annenberginstitute.bsky.social · 24/06/2026
Thank you to all who joined the EdWorkingPapers webinar with @tomdee.bsky.social and featuring @andrewmcamp.com, Jeremy Singer, and their co-authors. Join our email list to make sure you hear when the next webinar is announced: mailchi.mp/annenbergins...
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Thomas S. Dee @tomdee.bsky.social · 09/06/2026
My expectations for tomorrow's Congressional hearing with district superintendents are not high: “Some members of Congress, especially in an election year, would rather talk about anything other than their unrelenting support for an unpopular president and an unpopular war and economic precarity."
kqed.org
Congress to Grill San Francisco Schools Chief Maria Su About Gender, Ethnic Studies | KQED
Republican lawmakers are likely to ask about rules related to parents’ rights, race and sexuality in the city’s K-12 public schools.
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Reposted by Thomas S. Dee
Annenberg Institute @annenberginstitute.bsky.social · 04/06/2026
Register now for the June 17 EdWorkingPapers webinar facilitated by tomdee.bsky.social and featuring @andrewmcamp.com, Jeremy Singer, and their co-authors. edworkingpapers.com/webinar-series
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Jeremy Singer @jeremylsinger.bsky.social · 03/06/2026
I‘m really excited to talk about our research on attendance with @andrewmcamp.com, @tomdee.bsky.social, and our colleagues!
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Reposted by Thomas S. Dee
Andrew Camp @andrewmcamp.com · 03/06/2026
Looking forward to sharing some of my recent work + learn from some fantastic researchers in just 2 weeks! Check it out, sign up, and join us ⬇️
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SIEPR @siepr.bsky.social · 04/05/2026
📵 This just in: results of the first large study of cell phone bans in U.S. schools, from SIEPR's Hunt Allcott, @tomdee.bsky.social and Matthew Gentzkow. Key findings + links to @nytimes.com exclusive + study ⬇️ #EducationPolicy
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Thomas S. Dee @tomdee.bsky.social · 04/05/2026
School phone bans are popular with parents, teachers, & policymakers. But are they working? Using national data on the sale of lockable pouches to schools, our new study indicates they sharply reduce phone use but have mixed effects on outcomes. www.nytimes.com/2026/05/04/u...
nytimes.com
Did School Cellphone Bans Work? New Study Finds Mixed Results.
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Reposted by Thomas S. Dee
Brendan Nyhan @brendannyhan.bsky.social · 18/04/2026
Quantitative research in education is scandalously bad
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Thomas S. Dee @tomdee.bsky.social · 16/04/2026
I'm pleased to be in DC today to speak at a congressional briefing on safe and supportive school environments and particularly to underscore the research on how recent immigration raids are influencing students and schools.
Flyer for "Safe to Learn" congressional briefing
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Thomas S. Dee @tomdee.bsky.social · 25/03/2026
In the last school year, after years of controversy, San Francisco schools fielded pilots that reintroduced Algebra to 8th grade. A preregistered, quasi-experimental study by Elizabeth Huffaker and me indicates the major pilots were largely successful. www.nytimes.com/2026/03/24/u...
nytimes.com
San Francisco Killed 8th-Grade Algebra. Now It’s Set to Come Back.
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Reposted by Thomas S. Dee
SIEPR @siepr.bsky.social · 17/03/2026
The steep ⬇️ in U.S. public school enrollment during the pandemic has not reversed, SIEPR's @tomdee.bsky.social tells @theguardian.com in a fascinating story about the difficult. choices cash-strapped schools now face. "There are no free lunches," Dee says. Link 👇 #PublicEducation #EduSky
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Thomas S. Dee @tomdee.bsky.social · 23/02/2026
I spoke with The Minnesota Star Tribune about the research evidence, mine and others, which indicates the many ways in which aggressive immigration enforcement harms children, schools, and communities. www.startribune.com/coronavirus-...
startribune.com
Perry: The learning loss from the ‘ICE pandemic’
"As Trump’s virus lurked around Minnesota schools looking to kidnap children and their parents, many children quite reasonably went into hiding," David M. Perry writes.
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Reposted by Thomas S. Dee
Margaret Thornton @maggiethornton.bsky.social · 09/02/2026
Glad to see @tomdee.bsky.social and Elizabeth Huffaker's work on accelerating opportunity in Algebra I out of the working papers and into @aeraedresearch.bsky.social! doi.org/10.3102/0002...
doi.org
Accelerating Opportunity: The Effects of Instructionally Supported Detracking - Thomas S. Dee, Elizabeth Huffaker, 2026
The pivotal role of algebra in the educational trajectories of U.S. students continues to motivate high-profile policies focused on when students access the cou...
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Ludger Woessmann @woessmann.bsky.social · 26/01/2026
📢 Call for papers: CESifo Area Conference on Economics of Education co-organized w/ Eric Hanushek (Stanford) 🏛️ 11-12 Sept 2026, Munich 🧑‍🏫 Keynote: John List (Chicago) @johnlist.bsky.social 👉 www.ifo.de/en/cesifo/ev... ⏰ Deadline: 11 May 2026 🖼️ Past programs: sites.google.com/view/woessma...
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Jeremy Singer @jeremylsinger.bsky.social · 17/12/2025
For context, this drop in attendance rates related to the measles outbreak (about 93% to 90%) is almost as large as the initial drop in TX attendance rates from pre-pandemic to post-pandemic (95% in 2018-19 to 91% in 2021-22). (TX attendance trends over time here: www.aei.org/research-pro...)
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Sofía Wilson @sofia-wilson.bsky.social · 17/12/2025
In 2000, measles was declared eradicated in the U.S. Today, declining child-vaccination rates are driving the largest measles resurgence we've seen in 3+ decades. How do these outbreaks impact schooling? @tomdee.bsky.social and I examine this question in West Texas, the country's largest outbreak.
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Thomas S. Dee @tomdee.bsky.social · 17/11/2025
Our preregistered study of mental-health co-responders—now out in Nature Human Behaviour (doi.org/10.1038/s415...) —finds positive benefits in terms of significant reductions in psychiatric detentions and future mental-health crises relative to police-only responses.
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Thomas S. Dee @tomdee.bsky.social · 04/11/2025
The aggressive immigration raids we now see across the nation began 10 months ago in California's Central Valley. Their impact on children, families, and communities is an important & active area of research I'm pleased my study of the initial raid's early impact on students is now out in @pnas.org
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Thomas S. Dee @tomdee.bsky.social · 27/10/2025
Empirical evidence and conceptual reasoning suggest quasi-experimental studies—the most common form of studies making causal claims—have a "p-hacking" problem. My essay on this and the case for adapting & adopting QED preregistration is now published in Evaluation Review. doi.org/10.1177/0193...
doi.org
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
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Thomas S. Dee @tomdee.bsky.social · 24/10/2025
Such a warm, engaging, and informative visit! My thanks to the @annenberginstitute.bsky.social at Brown University for inviting me to give the Annenberg 2025 Distinguished Lecture.
Lecture photo, credit: Eric Patashnik
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Thomas S. Dee @tomdee.bsky.social · 16/10/2025
I'm honored to give the Annenberg 2025 Distinguished Lecture next week and looking forward to being in conversation with this outstanding community.
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Thomas S. Dee @tomdee.bsky.social · 06/10/2025
Know any aspiring PhD students interested in quant studies in education? Please direct them to our programs in ed policy, econ of ed, or ed data science! I hope to welcome an energetic & ambitious student to join me in our new building 🌴☀️ Applications due November 17 ed.stanford.edu/admissions/a...
ed.stanford.edu
Apply for Admission | Stanford Graduate School of Education
As you prepare your application, familiarize yourself with the admission process and timeline for your desired program below. Note that the application for 2026-2027 entry is not yet available.
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Thomas S. Dee @tomdee.bsky.social · 03/10/2025
🚨Do you know a school, system, or network doing amazing work in support of student success in high school, particularly through a continuous-improvement approach? Let's recognize them! Encourage them to apply for the Carnegie Award for Impact (cfdn.at/4o4gp58). Applications due on November 10.
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Paige Kowalski @paigekowalski.bsky.social · 20/09/2025
I have watched states delay releasing test scores for months as they work to message results and hope no one is paying attention.
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Thomas S. Dee @tomdee.bsky.social · 12/09/2025
It's gratifying to see my recent immigration-raid research actually being used. wapo.st/42mWdTn
wapo.st
Teachers sue over Trump's immigration crackdown, saying students are staying home
Labor unions representing educators and school employees are suing President Donald Trump’s administration over its immigration crackdown
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Margaret Thornton @maggiethornton.bsky.social · 11/09/2025
"Educators should also understand the limitations of research evidence. Rigorous impact evaluations...can only tell us what has worked someplace at some time—not what will work universally for educators facing specific challenges." - @tomdee.bsky.social www.edweek.org/leadership/o...
edweek.org
High Quality Research Rarely Informs Classroom Practice. Why? (Opinion)
The connection between education research, policy, and practice is broken. Here’s what it would take to fix it.
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Reposted by Thomas S. Dee
Dan Willingham @dtwuva.bsky.social · 11/09/2025
Why aren't practices based on research implemented in schools? @tomdee.bsky.social has insights, and ideas for change. www.edweek.org/leadership/o...
edweek.org
High Quality Research Rarely Informs Classroom Practice. Why? (Opinion)
The connection between education research, policy, and practice is broken. Here’s what it would take to fix it.
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Reposted by Thomas S. Dee
Cara Jackson @carajackson.bsky.social · 09/09/2025
"...embrace opportunities for quick and meaningful wins. These are the common-sense education initiatives that share three critical features: evidentiary support, low financial costs, and scalability." - @tomdee.bsky.social www.edweek.org/leadership/o...
edweek.org
High Quality Research Rarely Informs Classroom Practice. Why? (Opinion)
The connection between education research, policy, and practice is broken. Here’s what it would take to fix it.
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Thomas S. Dee @tomdee.bsky.social · 08/09/2025
Just out in @edweek.org's #K12BigIdeas, I criticize the quality & connectedness of education research, policy, & practice and discuss what it would take to do better. www.edweek.org/leadership/o...
edweek.org
High Quality Research Rarely Informs Classroom Practice. Why? (Opinion)
The connection between education research, policy, and practice is broken. Here’s what it would take to fix it.
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Reposted by Thomas S. Dee
Eric Dearing @ericdearing.bsky.social · 10/07/2025
Have we given too much "credit" to the pandemic for learning losses? Almost 50% of the post-pandemic decline in achievement on 8th grade NAEP was to be expected (without the pandemic!), simply using the same rate of declining achievement that began unfolding starting in 2013!
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Annenberg Institute @annenberginstitute.bsky.social · 02/07/2025
The @nytimes.com spotlighted a new study from #EdWorkingPapers that examines the profound impact of immigration raids on attendance in California's Central Valley. Read the NYT article below.
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Reposted by Thomas S. Dee
EdSource @edsource.org · 20/06/2025
Immigration raids in January and February increased absences by 22% in five school districts, according to a newly released Stanford study.
edsource.org
‘There was a lot of fear’: Central Valley immigration raids drive up absences in schools, study finds
Immigration raids in January and February increased absences by 22% in five school districts, according to a newly released Stanford study.
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Reposted by Thomas S. Dee
SIEPR @siepr.bsky.social · 17/06/2025
🚨New research from SIEPR Senior Fellow @tomdee.bsky.social finds that student absences rose amid intensified immigration enforcement, indicating lost learning opportunities. 👇 bit.ly/3I1vGDJ
bit.ly
Student absences increased under threat of deportation efforts, study finds
New research by SIEPR Senior Fellow Thomas Dee finds a 22 percent jump in student absences in California school districts facing intensified immigration enforcement.
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Adam Gamoran @agamoran.bsky.social · 17/06/2025
I appreciate the work of @wtgrantfdn.bsky.social grantee @tomdee.bsky.social showing student attendance, already in crisis after COVID, is further disrupted by immigration raids www.nytimes.com/2025/06/16/u...
nytimes.com
Immigration Raids Add to Absence Crisis for Schools
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Thomas S. Dee @tomdee.bsky.social · 16/06/2025
The current wave of federal immigration raids began in January with a “rogue” operation in California’s Central Valley. My new study finds these raids increased school absences by 22%—a leading indicator of the resulting family stress & lost learning opportunities👇 www.nytimes.com/2025/06/16/u...
nytimes.com
Immigration Raids Add to Absence Crisis for Schools
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Thomas S. Dee @tomdee.bsky.social · 15/06/2025
I spoke with the NYT for this article. I'm unconvinced that the universal kindergarten redshirting of boys is a good idea... www.nytimes.com/2025/06/14/u...
nytimes.com
Should Boys Start Kindergarten a Year Later Than Girls?
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Thomas S. Dee @tomdee.bsky.social · 07/06/2025
Seen on the streets of Paris today. #EdPolicy is everywhere.
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Thomas S. Dee @tomdee.bsky.social · 31/05/2025
This provocative, data-infused essay by James Wyckoff — edworkingpapers.com/ai25-1197 — serves as a reminder that fully understanding the declines in student achievement requires us to look well before the COVID-19 pandemic.
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Dan Goldhaber @cedr.bsky.social · 26/05/2025
Wow the latest episode of the @citizenstewart.bsky.social show nails it when it comes to the evidence on merit pay. It's hard to get it right (implementation details, supports, etc.), but it can move the needle on student achievement. But 👇 www.thebranchmedia.org/show/citizen...
thebranchmedia.org
Citizen Stewart Show - The Branch
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Thomas S. Dee @tomdee.bsky.social · 22/05/2025
I was so pleased to cross the Bay today and speak at the Berkeley Initiative for Transparency in the Social Sciences (www.bitss.org) about the need for (and feasibility of) adopting preregistration of studies making causal claims with observational data. #OpenScience
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Benjamin Riley @benjaminjriley.bsky.social · 20/05/2025
"With Silicon Valley in full AI hype mode, we need independent studies of AI in education that we can trust to fairly evaluate this technology’s impact, positive or negative. We’re not getting that right now and it’s a problem." open.substack.com/pub/buildcog...
open.substack.com
Something rotten in AI research
Why so many shady studies?
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Cara Jackson @carajackson.bsky.social · 14/05/2025
Causal inference friends, check out The Case for Preregistering Quasi-Experimental Program and Policy Evaluations by @tomdee.bsky.social tom-dee.github.io/files/Dee_Ev...
tom-dee.github.io
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Benjamin Riley @benjaminjriley.bsky.social · 09/05/2025
In April 2025 I delivered a speech at the ASU+GSV ed-tech conference titled "AI Will Not Revolutionize Education." It touches on human cognition, gen AI, and the nature of scientific and social revolutions. I worked hard at this, I hope you'll watch and share. www.youtube.com/watch?v=u0_t...
youtube.com
AI Will Not Revolutionize Education
YouTube video by Cognitive Resonance
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Stanford Graduate School of Education @stanfordeducation.bsky.social · 11/04/2025
A study by Professor @tomdee.bsky.social and GSE doctoral student Daniela Ganelin suggests that access to CS Principles could account for roughly two-thirds of the growth in AP computer science exams taken nationally over the past decade: ed.stanford.edu/news/stanfor... #EduSky #AcademicSky
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Thomas S. Dee @tomdee.bsky.social · 11/04/2025
Need some good education news? Over the last decade, the number of students taking an AP Computer Science exam more than tripled and that was no accident. In a new @pnas.org study, Daniela Ganelin & I find that roughly two-thirds of this growth can be attributed to the new AP CS Principles course.
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Educational Researcher - AERA @erjournal-aera.bsky.social · 02/04/2025
Stanford University researchers studied the effects of the San Francisco Unified School District's math course pathway reform. Their work provides insight into policy reform and "increasing enrollment of students from historically marginalized groups in advanced math courses." ➡️ bit.ly/4l8vwJN
Cover of the AERA Educational Researcher Journal, Volume 54, Number 2.
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Thomas S. Dee @tomdee.bsky.social · 21/03/2025
I just shared this "continuous improvement" toolkit with someone who approached me about how to drive positive change in their school district. This useful product, which is from a recently cancelled Regional Educational Laboratory, is an example of what this Administration is defunding.
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Stanford Graduate School of Education @stanfordeducation.bsky.social · 20/03/2025
Professor @tomdee.bsky.social, who uses school data to research chronic absenteeism, teacher performance, and high school graduation rates, discusses the recent staff reductions at the National Center for Education Statistics. #EduSky #AcademicSky
insidehighered.com
Layoffs Gut Federal Education Research Agency
The department says the research agency failed to effectively fulfill its mandate and exemplifies wasteful spending. But experts warn the cuts will undermine “the backbone of accountability” for the c...
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Thomas S. Dee @tomdee.bsky.social · 04/03/2025
"We panicked over the first deaths, mourned and memorialized the first hundred thousand and then, eventually, stopped counting — and started instead to pretend it had never been that serious." www.nytimes.com/interactive/...
nytimes.com
Opinion | How Covid Remade Our America, Five Years Later (Gift Article)
It feels as if the pandemic is behind us. But we’re living in the world it made.
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AEFP @aefpweb.bsky.social · 26/02/2025
Join the doctoral student group TOMORROW at 1 PM ET for a workshop on Surviving (and Thriving) in the Hidden Curriculum of Graduate School. Register today: fsu.zoom.us/meeting/...
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