Mobile phones should be banned from classrooms, that's the policy more than 120 headteachers are campaigning to enforce.
Students in year 11 and below would not be allowed their phones on-site if the ban is approved.
The letter states :
We believe that these devices can be corrosive to otherwise calm and structured learning environments, and that a firm policy against their use is the best way for schools to maintain order in the pace of the disruption that mobile phones can cause."
Headteachers currently hold the right to allow, or not allow, their students to have smartphones out during school hours.
Schools minister Nick Gibb said he had concerns about the impact that excessive phone use was having on children and suggested they should be banned.
Meanwhile, the National Association of Head Teachers warned prohibiting smartphones could make tackling the associated problems harder.
Poll: Should mobile phones be banned from schools?
“Outright banning mobile phones can cause more problems than it solves, driving phone use ‘underground’ and making problems less visible and obvious for schools to tackle