There are so many factors to the negative education outcomes but this policy is just obvious. I guess its actually the parents who insist on being able to reach their kid at any moment?
> 4. Limit the distractions caused by using digital devices in class >Students who spent up to one hour per day on digital devices for learning activities in school scored 14 points higher on average in mathematics than students who spent no time. Enforced cell phone bans in class may help reduce distractions but can also hinder the ability of students to self-regulate their use of the devices.
I don't think a simple blanket ban on smartphones in schools is likely to solve much.
If the emergency is on the outside of school, parents still need to go through the main office to pull kids out of school, so contacting them is also unnecessary. These helicopter parents smh