Full Breakdown
Study Finds Mixed Outcomes of School Cellphone Bans
5/4/2026, 10:57:15 PM
Core Findings of the NBER Study
A new study, the largest of its kind, will be published by the National Bureau of Economic Research. Researchers from Stanford, Duke, the University of Pennsylvania, and the University of Michigan examined schools that implemented strict cellphone bans requiring students to place phones in locked pouches supplied by Yondr. The Yondr pouches lock with a magnetic device and remain sealed until the final bell, preventing students from accessing their phones during instructional time. The study reports a meaningful decline in student cellphone use, no average increase in test scores, an initial rise in suspension rates, and, over time, a reported increase in students’ sense of personal well-being. Teachers in the surveyed schools noted fewer distractions from personal device use.
Bipartisan Wave of Cellphone Restrictions in Schools
Over the past three years, two-thirds of U.S. states enacted laws limiting cellphone use in schools. The idea attracted rare bipartisan support, with policymakers citing concerns about distraction, bullying, and declining test scores, and absenteeism. The legislative push led many districts to adopt the Yondr pouch system, which locks phones with a magnetic device until the final bell.
Quantitative Results
- Adoption: Two-thirds of states passed cellphone restriction laws within three years.
- Device Use: Schools with strict bans observed a meaningful decline in cellphone usage among students.
- Academic Performance: Average test scores did not rise in the ban-implementing schools.
- Discipline: Suspension rates increased shortly after bans were introduced.
- Student Well-Being: Surveys indicated a greater sense of personal well-being among students after an adjustment period.
- Implementation: Students must keep phones in locked pouches for the entire school day, with access only after the final bell.
Official Statements & Responses
Policymakers across party lines supported the bans, emphasizing the need to address distraction, bullying, and declining academic outcomes. Teachers reported fewer distractions from personal cellphone use.
Criticism & Opposition
The rise in suspension rates has been noted as a drawback of the bans. Critics have highlighted the lack of test-score improvement as evidence that the restrictions do not directly enhance academic performance.
On-the-Ground Reports
Students in schools with strict bans reported a greater sense of personal well-being. Teachers reported fewer distractions from personal cellphone use.
Conflicting Reports & Gaps
The study presents a contrast between teacher-reported reductions in distraction and the absence of test-score gains. The analysis draws exclusively on data from Yondr, which supplies lock-pouch systems to participating schools, limiting insight into schools that use alternative enforcement methods.
