Exactly. It is an outgrowth of the 60's Peace, Love do no harm , movement in my opinion. Kids were raised with those thoughts grew up and were able to set policy etc. It became "harmful to children" if you spanked them. Then it grew to the point where teachers are not even allowed to make a kid stay after school. And many schools are banning homework.Mouthing off to a teacher or other generally disruptive behavior was dealt with strongly when I went to school. Somehow we went soft and our children suffer from it. Every child in a class is hurt by the one disruptive element. Private schools have fewer problems because they simply expel disruptive children. Public schools don't have a solution. Once you loose control, it's gone.
So we have gone from the 50's "beat their asses as needed." to "The teacher hurt my feelings by using a Red marker to grade my quiz."