Early 1970’s graduate, no pranks.
Early 80’s graduate, our worse offenses: we drove in a circle for 5 minutes at the high school drop off the last day of school. One guy decided to drive through the grass, big mistake, he was pulled over by the cops and cited. He was not allowed to walk in graduation and his parents had to pay for damages. Our other worse offense, the guys sung the Do Wah Diddy Diddy tune as we were marching through the hallway into the gym to graduate with the teachers having a meltdown.
Hear you. When I was a sophomore in high school, someone from the junior class of 69 tagged a brand new bridge. They took away their class dance and told them if it happen again they would lose their ptom.