Schools are pressure cookers. Everytime something happens at one anywhere, the natural reaction for administrators the country over to tighten the screws, less freedom, more rules, more restriction - kids can't blow off steam, can't leave school, if they are not getting along, they are made to sit there all day, everyday and take it. Then they go home, log in, and are reminded at all times there place in life (or lack of one as the case may be).
For all intent and purpose, high school now allows much less freedom, and requires no actual personal responsibility than grade school did 20 or 30 years ago.