Generally, they don't hate the institution itself, but rather the administration, or at least aspects of it. It's a classic youth rebellion against authority.

Generally, they don't hate the institution itself, but rather the administration, or at least aspects of it. It's a classic youth rebellion against authority. They generally love their friends, love many of their teachers, and the environment, but they hate those who would enforce anything against what they think is right, or nice, or prudent.