OK, now I'm feeling old.
First off (just turned 40)... there *were* no cell phones when I was in school. In fact, I wasn't allowed to use the house phone without permission. That was for the adults. Period.
I see no problem with banning cell phones in classrooms; cell phones can be locked in the lockers and left off. If it's *that* much of an emergency, you should be excused from class anyway. If it's your parents saying they'll be gone and to microwave something for dinner, they can either a) leave a voicemail, b) call the office and leave a message (the old fashioned way), or c) leave a note on the fridge.
I'm expected to turn off my cell phone when in a hospital (although I have other views on that as well, like the FCC regulations stating that electronic equipment must be able to *receive* stray RF from other devices and still function properly.... personally, I think the whole thing is a bunch of crap.... ) I'm also expected to turn off or set silent my cell phone when I'm in trainings, at meetings, etc.
And speaking of hospitals, I once had a security guard come up to me at a hospital (I'm an amateur radio operator), and tell me that he was going to have to confiscate my HT (Handy-Talkie) radio. I asked him "Why?" He said "Because it can interfere with hospital equipment" I said "Oh, more than the 5 watt motorola that you've got on your belt? Besides, I'm *LICENSED* to carry this radio, and I'm putting out 1/20th of the power that you are (I was at 250mw), and on top of THAT, I'm MONITORING, not TRANSMITTING, because I'm part of an EMERGENCY SERVICES NETWORK." It shut him up pretty quick.
But, I went on a tangent. My daughter (16 years old) feels that she *DESERVES* a cell phone, because her friends have cell phones, etc. I told her that first she DESERVED to work for one, the way I have to work for mine. End of story.
Just my 2¢
"In order to start solving a problem, one must first identify its owner." --Me
--Greg