Restrict Teachers and or School Officials rights over cell phones/ipods

It invades our personal privacy as teenagers, and violates our 1st amendment. Cell phone use should be limited in schools to before and after or perhaps lunch but, if it goes off in class accidentally teachers will sometimes will make you enter your passcode (if you have one) and go through your messages and or pictures. It gives them more of a reason to bust us for things we weren't doing during school hours. It's not fair to blow something such as a text tone out of proportion and go through every single thing we've done at home. We as teenagers deserve privacy too.