More than three dozen states now restrict cellphone use in public school classrooms, and the wave that started with a single Florida law in 2023 has become the default policy across most of the country as students return to class this month. [1]
As of this week, 45 states have enacted some law or policy addressing K-12 cellphone use, according to Ballotpedia's tracker, and 36 of them ban or limit phones in the classroom outright. Five more states require districts to adopt their own policies without dictating the specifics, and four encourage restrictions without mandating them. [1] A separate tally from EdChoice, drawing on Education Week's running count, puts 39 states plus Washington, D.C. under some form of restriction already. [2]
The legislative wave traces back to research from psychologist Jean Twenge and New York University's Jonathan Haidt, who argued cellphones and social media were driving anxiety and depression among adolescents. [1] Lawmakers cited that work directly in building the current wave of bans, most of them so-called "bell-to-bell" policies that bar phone use from the first bell to the last, not just during class periods.
The open question -- the one most state-level coverage skips -- is whether the bans actually change anything beyond the rhythm of the school day. Early evidence, a year into the earliest bans, points toward cultural rather than academic change. New York's statewide ban, in effect since September 2025, produced a survey of nearly 600 educators that found fewer classroom distractions and stronger student engagement, according to Gov. Kathy Hochul's office. [3] Shavar Jeffries, chief executive of the KIPP Foundation charter network, told ABC News that KIPP high schools with bell-to-bell restrictions saw calmer classrooms, with teachers spending "less time policing devices and...more time teaching." [3] Researchers are still measuring whether any of that translates into the test-score gains supporters promised when the bans first passed. [3]
Enforcement is where the policy gets complicated in practice. Denver Public Schools' board voted unanimously this week to impose a bell-to-bell ban across the district's roughly 90,000 students. [3] In Kansas, that mechanism looks like literal hardware: Kansas City, Kansas Public Schools spent $150,000 on dedicated phone lockers so that every student's device is collected and locked away from the first bell to the last, no exceptions, not even for lunch, according to a district rollout widely shared on social media.
That granular reality -- lockers, collection procedures, the cost of enforcement -- is largely absent from state-level coverage of the trend, which tends to report passage counts and academic-freedom debates rather than what compliance actually costs a single district. Districts weighing whether to adopt a policy this fall have little public data on what a functioning enforcement system costs beyond Kansas City's single, widely shared example.
With more than 30 states now committed to the policy and the 2026-27 school year just underway, the next test isn't whether more states will join. It's whether the ones already in have built anything that survives contact with a cafeteria full of teenagers guarding their phones, and whether the academic gains supporters promised ever show up in the data researchers are still collecting.
-- MAYA CALLOWAY, New York