Haidt Phone-Free Schools Evidence: Mostly Good or Neutral

What does the Haidt phone-free schools evidence actually say? The most famous advocate of phone-free schools does not claim they raise test scores across the board. In an October 27, 2026 interview with Katie Couric Media, Jonathan Haidt said his lab’s working paper on seven natural experiments found “either beneficial effects or neutral effects, with few negative effects.” That is a measured claim, and it deserves a measured check. I went through the published studies any such review has to deal with, from England, Norway, Florida and the national US pouch study. The short version: Haidt’s summary of the evidence on phone-free schools is fair, and in places more cautious than his critics assume. The bigger claims about social life and wellbeing are where the evidence is thinnest.

Key Takeaways

• Haidt’s own summary of the research is “beneficial or neutral” on test scores, with few negatives and some outcomes, such as discipline, getting “worse before they get better.”
• The published natural experiments match that: England found gains of about 0.07 standard deviations, concentrated in low achievers; Norway found no average effect but gains for girls; Florida found about 3.5 percentiles by year two; the national US study found near-zero averages.
• Haidt’s strongest causal claim cites a randomized trial in Indian higher education. I could not locate that paper, so it is reported here only as he describes it.
• The social benefits he describes (more talk, noise and laughter at lunch) come from reports, not yet from systematic measurement. He says so himself.
• On wellbeing, the evidence is mixed: one English study found no difference, while the US and Norwegian studies found improvements over time or for girls.

Haidt Phone-Free Schools Claims: What He Said in October 2026

Jonathan Haidt is a social psychologist at NYU Stern and the author of The Anxious Generation. He proposes four norms for families and schools: no smartphones before high school, no social media before 16, phone-free schools, and more unsupervised play and independence. Education Week summarized them in June 2026.

In his October 2026 interview, Haidt made five claims about phone-free schools:

1. A working paper from his lab summarizes seven natural experiments. On test scores, “the studies primarily found either beneficial effects or neutral effects, with few negative effects,” and “the results on test scores are encouraging.”
2. A randomized trial now exists. He calls it “the first-ever large-scale randomized controlled trial,” a study by Sungu and colleagues of phone bans during lectures at higher-education institutions in India, which he says improved GPAs for lower-performing and first-year students.
3. Some outcomes get worse first. He says there is “documented evidence of benefits such as reduced bullying and disciplinary incidents,” but that “in some cases (such as disciplinary incidents), the outcomes get worse before they get better.”
4. Social life changes fast. He reports “a lot more noise and laughter in the hallways and at lunch,” happier teachers, and more library checkouts, appearing within months. He also says it “will take more time” to confirm and urges researchers to study these effects systematically.
5. Bell-to-bell beats instruction-only. “I would urge every district to consider bell-to-bell restrictions,” he said, because instruction-only rules let students return to phones at lunch, between classes and at recess.

Two notes on sourcing. I could not find the working paper itself in a public repository, and I could not locate the Sungu et al. trial through academic databases. Both may be forthcoming. Until they are public, claims 1 and 2 rest on Haidt’s description.

What the Published Studies Actually Show

Here is the evidence a seven-study review has to grapple with, read on its own terms. I don’t know exactly which seven studies Haidt’s lab included, so this is not a reconstruction of his paper. It is the set a skeptical reader would check.

England (Beland and Murphy, 2016, Labour Economics). Schools in four English cities that banned phones saw high-stakes exam scores rise about 0.07 standard deviations on average, using a difference-in-differences design. The gains came mostly from the lowest-achieving students. The authors suggest bans could be a low-cost way to reduce educational inequality.

Norway (Abrahamsson, SSRN working paper). Using administrative data and an event-study design across middle schools, Abrahamsson found no average effect on education or mental health. Underneath that average, bans reduced psychological health-care use among girls, lowered bullying for both genders, and improved girls’ grades and academic-track placement, especially among girls from disadvantaged backgrounds.

Florida (Figlio and Özek, 2026, Education Next). In one of the 10 largest US districts, a strict bell-to-bell ban cut high school phone visits by more than 80%. Suspensions rose 25% in year one, then returned to normal. Scores were flat in year one and up about 3.5 percentiles by the end of year two, with the largest gains in schools that had the most phone use before the ban. Fewer unexcused absences explained nearly half of the gain.

United States, national (Allcott and colleagues, 2026, NBER Working Paper 35132). Across about 4,600 schools using lockable pouches, average test-score effects were “consistently close to zero” for three years, with modest gains in high school math and small losses in middle schools. Discipline rose in year one and faded. Wellbeing dipped and then rose above baseline. This study is not yet peer-reviewed.

England, wellbeing (Goodyear and colleagues, 2025, The Lancet Regional Health – Europe). The SMART Schools study compared 1,227 students aged 12 to 15 at 20 restrictive and 10 permissive English secondary schools. It found no difference in mental wellbeing between groups. Students at restrictive schools used phones and social media less during school time, but not across the whole day. This is a cross-sectional comparison, not a natural experiment, so it can’t show cause in either direction.

Haidt’s Claims Against the Evidence

Haidt’s claim	What the published evidence shows	Fair?
Test-score effects are mostly beneficial or neutral, with few negatives	England +0.07 SD; Florida +3.5 percentiles by year 2; Norway no average effect; US national near zero, with small middle-school losses	Yes. “Neutral” carries a lot of the weight
Effects are larger where phone use actually fell	Florida’s high-use schools gained most; pouches cut use more than paper policies	Supported
A large RCT shows GPA gains for lower performers	Not verifiable yet; the paper could not be located	Unconfirmed
Discipline gets worse before it gets better	US national suspensions +16% in year 1; Florida +25%; both faded by year 2	Yes, documented
Reduced bullying	Norway found less bullying; US national found no clear change in perceived online bullying	Mixed
More social interaction, noise and laughter	Teacher and school reports; no systematic measurement yet	Plausible, unmeasured
Bell-to-bell beats instruction-only	USC survey data: core-class phone use rose to over 50% under instruction-only rules by year end, versus 35% under bell-to-bell	Supported for compliance; learning comparison limited

The pattern that runs through this table is that effects concentrate. Low achievers in England. Girls in Norway, especially lower-income girls. High-use schools in Florida. A ban seems to help most where phones were doing the most damage, and to do little where they weren’t. That is consistent with Haidt’s argument that effects are strongest where phone use “actually declined.” It is also why national averages look small.

How to Read This Debate Without Picking a Team

Notice when advocates and critics agree

Haidt calls the test-score results “encouraging.” Thomas Dee, a co-author of the national study, called his own results “sobering.” Both are describing roughly the same numbers: modest, mostly non-negative, slow. The difference is emphasis. Parents can take the numbers and leave the adjectives.

Separate the school question from the social media question

Phone-free schools are one of Haidt’s four norms. The evidence for them is more direct than the evidence for his broader argument that smartphones and social media caused the rise in teen mental illness, which researchers such as Candice Odgers dispute. We cover that disagreement in Haidt vs. Odgers: the screen debate, explained fairly. You can support your school’s ban without settling that larger debate.

Ask about subgroups at your school

If gains concentrate among low achievers and girls, ask what your school is tracking. A principal who says “scores didn’t change” may be looking at the average and missing the students it helped.

Wait for the paper

Haidt has been open that his lab’s paper is a working document. When it and the India trial appear, read the methods. Working papers and interviews are where claims start, not where they end.

What not to do

Don’t cite “Haidt’s research proves bans raise grades.” His own summary doesn’t say that. And don’t dismiss the ban as “debunked” because a national average was near zero. Near zero on average, with gains for specific groups and costs that fade, is a real result, and a policy can be worth it on those terms.

For why early averages stay flat, see why phone bans haven’t raised test scores yet.

What to Watch For Over the Next 3 Months

• Week 4: Watch for the release of Haidt’s working paper and the Sungu et al. trial. When the methods are public, the claims in this article can be tested properly.
• Month 2 red flags: Headlines saying bans “boost scores” or “don’t work” without naming a study, a place and a time frame. Both overstate the evidence.
• Month 3 self-check: Can you name the outcome you care about most for your child (grades, friendships, focus, sleep) and which study speaks to it? That is a better guide to your school’s policy than either side’s slogan.

Frequently Asked Questions

What does Jonathan Haidt say about phone-free schools?

In October 2026, Haidt said his lab’s working paper on seven natural experiments found mostly beneficial or neutral test-score effects, with few negatives. He described a randomized trial in India showing GPA gains for lower performers, reported more social interaction at school, and urged bell-to-bell rules over instruction-only ones.

Do phone-free schools improve test scores?

Modestly and unevenly. England saw about 0.07 standard deviations of improvement, mostly for low achievers. A Florida district saw about 3.5 percentiles by year two. A national US study found near-zero averages over three years. Norway found no average effect but gains for girls.

Has Haidt’s phone-free schools working paper been published?

As of November 2026, I could not find it in a public repository. Haidt described it in an October 2026 interview. Until the paper is public, readers can check his claims against the individual published studies it likely draws on, as this article does.

Do phone bans improve student mental health?

The evidence is mixed. A national US study found wellbeing dipped in year one and rose above baseline by year three. A Norwegian study found fewer psychological health visits among girls. An English cross-sectional study found no wellbeing difference between restrictive and permissive schools.

Is Haidt right that bell-to-bell bans are better?

For compliance, the data support him. USC survey data show phone use in core classes rose far more over a year under instruction-only rules than under bell-to-bell rules. Direct evidence that bell-to-bell bans produce larger learning or wellbeing gains is still limited.

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About the author

Ricky Flores is the founder of HiWave Makers and an electrical engineer with 15+ years of experience building consumer technology at Apple, Samsung, and Texas Instruments. He writes about how kids learn to build, think, and create in a tech-saturated world. Read more at hiwavemakers.com.

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Sources

1. Katie Couric Media. (2026). “Are Phone-Free Schools Working? Jonathan Haidt Weighs In.” October 27, 2026. https://katiecouric.com/?p=282070
2. Vilcarino, J. (2026). “‘Anxious Generation’ Author Jonathan Haidt and Others Tackle Tech Overuse.” Education Week, June 18, 2026. https://www.edweek.org/leadership/anxious-generation-author-jonathan-haidt-and-others-tackle-tech-overuse/2026/06
3. Beland, L.-P., & Murphy, R. (2016). “Ill Communication: Technology, distraction & student performance.” Labour Economics, 41, 61–76. https://doi.org/10.1016/j.labeco.2016.04.004
4. Abrahamsson, S. (2024). “Smartphone Bans, Student Outcomes and Mental Health.” SSRN working paper. https://doi.org/10.2139/ssrn.4735240
5. Figlio, D. N., & Özek, U. (2026). “Can Banning Cellphones Save Student Learning? Evidence from Florida.” Education Next, 26(2). https://www.educationnext.org/wp-content/uploads/2026/05/ednext_26_2_research_figlio_ozek.pdf
6. Allcott, H., Baron, E. J., Dee, T., Duckworth, A. L., Gentzkow, M., & Jacob, B. (2026). “The Effects of School Phone Bans: National Evidence from Lockable Pouches.” NBER Working Paper 35132. https://www.nber.org/papers/w35132
7. Goodyear, V. A., Randhawa, A., Adab, P., et al. (2025). “School phone policies and their association with mental wellbeing, phone use, and social media use (SMART Schools).” The Lancet Regional Health – Europe. https://doi.org/10.1016/j.lanepe.2025.101211
8. Associated Press. (2026). “Largest-ever study of school cellphone bans finds mixed results.” NBC News, May 5, 2026. https://www.nbcnews.com/tech/tech-news/largest-ever-study-school-cell-phone-bans-finds-mixed-results-rcna343761
9. Silver, D., Rapaport, A., & Polikoff, M. (2026). “A year later: What teens tell us about school cellphone bans.” Brookings Institution. https://www.brookings.edu/articles/a-year-later-what-teens-tell-us-about-school-cellphone-bans/