My parents had eyes in the back of their heads, and we were taught to behave, pretty sure they pulled every trick out of the bag to keep us in line there are 5 of us. Funny thing was all the neighbor kids liked hanging around and the parents were good with their kids coming over, knew they'd be watched and safe, wouldn't be allowed to get too far out of line and still have fun. Have all turned into responsible adults. Just never know, have seen too tough or too soft not work.
Most of the kids that have seen at the local school have volunteered at, are fairly well behaved, and some come from tough situations, know what is and is not acceptable.