I agree with Krahe... Question = poorly worded like that.
I can see banning Cell Phones in anything below HS... As in an all the time ban, but in HS, a lot of kids are working and/or have families of their own kind of thing so I wouldn't agree with a ban in HS... If the phones go off in class, take them away, if they're caught not paying attention to the lecture or w/e and sending text messages, take the phones away... *shrug* You're always going to have some that abuse the privilege and those that don't...
~In college, it's the student's responsibility *100%* to pass the class... As long as they're not disrupting the class let them send as many texts as they want instead of paying attention to what's going on in class... They're the ones that are paying for the classes... If they/it do/does disrupt class, then the Professor has the choice to kick them the hell out of class, scold them, or both... Maybe a few other things, but that doesn't much matter... So... mehh.