Exactly...

Let's blame the school department for using what little leverage they have to try to correct bad behavior.

It can't be the kids' own fault for not meeting behavior expectations in class.

Teach your kids to behave in school and they wouldn't get recess taken away.

Now what shouldn't be allowed is if a few kids acting up results in recess being cancelled for the entire class. Make just those kids go spend recess in the principals office.