I remember my mom telling me how she received this when I was in elementary school, but luckily she didn't sign such stupid waiver.Parents had the option of signing a wavier at the beginning of any given school year. This was an contractual agreement that the teaching staff could physically repremand your child. In elementary school this was usually a paddling, with a wooden paddle, in the stairwell where everyone can hear. In High School this gave security the go-ahead to beat you into submission if the situation calls for it. If your parents did not sign the weavier security could still use " reasonable force to restrain the child ".
As for my current school, I don't have many problems with it, except that we have to wear our IDs without the loosening of the dress code. The dress code's there for security purposes (well that's what staff said) so they could tell whose the students, but with IDs the dress code should have loosened up a bit.