A review of peer-reviewed research on whether school phone bans actually improve academic performance — including studies on test scores, classroom engagement, attention spans, and which students benefit most.
It's the question every school administrator and parent asks: if we ban phones, will students actually perform better academically? The short answer, backed by a growing body of peer-reviewed research, is yes — especially for the students who need it most.
The Key Studies
The most-cited study on phone bans and academic performance analyzed data from 91 schools in four English cities before and after phone ban implementation. Key findings:
- • Phone bans improved test scores by an average of 6.4% of a standard deviation overall
- • The effect was twice as large (14.23%) for students in the lowest performance quartile
- • The researchers estimated this was equivalent to adding one extra week of school per year
- • High-performing students showed minimal change — they were already self-regulating
The critical insight: phone bans reduce the achievement gap. The students who benefit most are those who struggle most with self-regulation — and these are often the students schools are most trying to reach.
Norwegian Study (Beneito & Vicente-Chirivella, 2024)
A large-scale Norwegian study found that phone bans improved GPA by 0.03-0.06 standard deviations, with the strongest effects on girls and lower-achieving students. The study also found positive effects on mental health metrics.
UNESCO's comprehensive global review concluded that mere proximity to a phone reduces cognitive capacity even when the phone isn't being used (citing Ward et al., 2017). The report recommended phone bans in all schools worldwide as a policy priority.
Why Phone Bans Improve Academic Performance
The mechanism isn't complicated: phones fragment attention, and fragmented attention kills learning.
- • Task switching — Every time a student checks their phone (even for 5 seconds), it takes 20+ minutes to return to the same level of deep focus
- • Phantom vibrations — Students experience "phantom" notifications that pull attention even when phones are silent
- • Social comparison — Access to social media during school creates anxiety that competes with cognitive processing
- • Peer distraction — When one student uses a phone, nearby students are distracted too, creating a classroom-wide effect
The Catch: Enforcement Quality Matters
Here's the critical nuance: a phone ban only works if it's actually enforced. The LSE study found that schools with "announced but unenforced" bans saw no academic improvement. The gains came exclusively from schools that effectively prevented phone use.
This is why the choice of enforcement method matters enormously. Honor-based systems ("phones off and away") consistently fail to deliver academic gains because students simply don't comply. Solutions that provide real enforcement — like LockedIn's OS-level device locking — are the ones that translate into measurable academic outcomes.
The Bottom Line
The research is clear: enforced phone bans improve academic performance, especially for the students who need it most. The evidence is strong enough that UNESCO has made it a global policy recommendation. The question is no longer whether to ban phones — it's how effectively you enforce the ban. Contact LockedIn to learn how real enforcement drives real academic results.