I KNOW I went to Hornydog High, you know, raging hormones became evident at the beginning of co-ed gym classes. We were forced to line up and sit "Indian fashion" (my legs hated that) across from each other and while the boys could do noting about it several girls rocked back and forth...
I never heard about any student-teacher liaisons but the boys' and girls' gym teachers were front page. Now if you remember Porky's, the Lassie scene tells the story.