text: Now I know why you may want students to not use phones. Students can cheat on tests by looking online or texting. Also you don't want students to text during class and other times when they shouldn't. That's why after lunch and free times you should do a cell phone check to see if the students turn off their phones. If you were to find at least 50 phones on, then you can take cell phone days away for a week. To me that sounds like a fair exchange.