ELI5: Explain Like I'm 5

Mobile phone use in schools

Mobile phones have become a very popular item in today's society. Many people, especially young people, have them and use them for a lot of different things. Some schools have rules that say that students cannot use their phones during school hours. This is because phones can be a distraction from learning in the classroom. They can also be used to cheat on tests or to access inappropriate websites. So having a rule about no phone use during school time helps to keep students focused on learning.
Related topics others have asked about: