<p>When I sat in on some classes, the profs asked that all such devices be turned off. No phones allowed during class. Any exception like if you have a loved one in the hospital or some precarious situation, you ask for special permission. </p>
<p>There were no problems when I was there.</p>
<p>At my son’s high school, phones have to be turned off. Not on vibrate, but off. Too bad if you want to use it to keep track of time or whatever. Not allowed and that is a rule made right up front.</p>