Well there were a few good places to fool around. The favorite during school hours was in one of the back rooms behind the stage at our school. Actually below the stage at school.
It is particularly funny for me, because in my children’s school they have a room just like this under the stage, and because there are bathrooms and sinks in this room some of the mothers wanted to set these rooms up for the children’s use. Then it was pointed out that it would be a fire hazzard because there are no windows and the only way out is up one narrow staircase and through the auditorium.
When not on school time basements were always a handy hiding place.