When I was in high school (not that long ago, I'm in college), we weren't allowed to use any electronics on campus and would get them confiscated if discovered. This appeared to be standard procedure for most schools around the country. Do most high schools and middle schools allow the use of iPads and other devices in class now?
I use my iPad in class all the time. Since we all just got netbooks for note taking and such though, I am getting asked to put it away more, especially as more teachers get iPads. As for phones, there is only two classes I cannot have my phone out all the time. They are starting to be considered a 'tool or resource' as so many of us get smartphones. Even iPod touches are allowed to be out. We are the exception though it seems. Most schools are not as technologically integrated as we are.
Also, at my school, I would say about 65% of us have smartphones. Probably about 70% of those are iPhone 4s or iPhone 4Ss, mainly white Verizon 8/16 GB. Many of us plan to get an iPhone in the near future, like me, to replace my stupid Sony Ericson Xperia Play in May or June.
My parents pay $600 a month to Verizon between five smartphones, a Xoom, and a 4G iPad. $70 is from mine after taxes and fees, only $10 for sharing minutes, $6/ person for unlimited texting ($30 for the whole plan between five people), and 2GB of data for $30. I may have to start paying for my own phone bill is this summer when I get a job, so I know exactly how much it is.