[Tamerlin]

Why is this behavior (bullying) tolerated in school?

My theory is denial. Parents of bullies don't want to admit that their kids are doing wrong, and the parents of victims don't want to face the fact that they need to get involved.

That was my situation, at least -- even with known bullies... when I finally fought back, I got dragged to the principal's office... and I let him have it. Another rarity is that my parents actually backed me on that one.