The Educational Impacts of School Phone Bans: Evidence from Brazil
A recent study evaluated the effects of a phone ban in Rio de Janeiro schools. The research found that the ban led to a significant reduction in phone use and an improvement in test scores among students. This suggests that restricting non-educational phone use may have positive educational outcomes.
- ▪The study focused on a 2023 policy that banned non-pedagogical phone use in schools.
- ▪Researchers compared middle schools with strict phone rules to those without before and after the ban.
- ▪In treatment schools, in-school phone use decreased significantly, and test scores improved by 0.06 standard deviations.
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Record
| Original publisher | NBER |
| Canonical URL | https://www.nber.org/papers/w35233 |
| Publication time | Mon, 25 May 2026 17:25:10 +0000 |
| Retrieval time | 2026-05-25T17:37:39.277Z |
| Last seen | 2026-05-25T17:37:39.277Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | QOFXTCVkaOT1 |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Home Research Working Papers The Educational Impacts of School Phone… The Educational Impacts of School Phone Bans: Evidence from Brazil Guilherme Lichand, Luca Moreno-Louzada, Thiago da Costa & Matthew Gentzkow Share X LinkedIn Facebook Bluesky Threads Email Link Working Paper 35233 DOI 10.3386/w35233 Issue Date May 2026 Concerns about negative impacts of student phone use have led to calls around the world for tighter restrictions on phones in schools. This paper evaluates the impact of a 2023 policy that banned non-pedagogical uses of phones within schools in Rio de Janeiro, Brazil.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at NBER.