2) Parents are able to call their children and leave messages in their voice mail or through text messaging that their kids can see later on instead of bugging the office to leave a message there. These messages could be things such as, "Mr. Boyd is going to be picking you up tonight," or "I'm going to be late this afternoon; wait for me until 4pm." Or something more important (can't come up with any ideas at the moment!)
3) Public phones are full of bacteria and their use should be discouraged as much as possible. Being allowed to have a cell phone would prevent public phone use.
4) Many students at the jr. high and high school level have activities and the like after school. Often the office is closed and isn't picking up a phone so parents would have no way to contact their kids (if need be) if they weren't allowed to bring their cell phones. [I have memories of waiting around after band for my mother to show up, wondering where the heck she was. But this was before the age of cell phones--it would've been nice to have been able to call her and find out what was going on!]
Well, I think yes because if you just tell them to not text message, play games, and call people, and make allot of noises with it like beeps or ringtones. Just them them to put them on silent, and no games, then they can use them. If you do that, then yes they should. It also gives them more happiness in the classroom because they can bring something along so they don't forget to take it after class or leave it at home. Oh yeah, and just incase something bad happens like your school caught on fire or police emergency. Something like that. You know what they say: "Better safe than sorry."