Haha, wow. Jesus. These places sound ridiculous.
My high school is so awesome about this stuff. We have a pretty fair rule on clothing - we have what we call the "3 B's", or "No boobs, no bum, no belly", and most people are good about that. Granted, for the guys, we have a simple "No underwear showing" rule, but the teachers aren't exactly strict about enforcing it.
Other than that, the school is pretty lax about stuff; we're allowed to text if we aren't doing anything (spares, done homework/classwork, etc.), and we even have a Wi-Fi network, which is nice. Facebook is blocked across all networks, but there are ways around it, and I've actually shown some teachers how to bypass it, so I doubt most of them give a shit.
Anyways, yeah, my school is awesome. Go Canada.