I wouldn't... but then again, my HS 15 years ago had the same requirement. In our case that was because to get off campus you had to cross a major road, which was a huge liability for the school. Did I walk home a few times anyway... yeah, but I got in trouble each time when my parents found out. The school entrance was at the top of a hill on a bend, and people drove like maniacs on that road. It's the same where DH coaches, and every other school I've seen a rule like that exist in. In DH's case it's a major 4 lane highway I wouldn't want to try to cross this road on foot... let alone have my I am invincible HS age student do it.