Usually before that happens, these High School student sit in the front row specifically to show the older white lady teacher their manhood. They "let the head poke-out" from their shorts as if nothing is happening. My wife got very flustered and embarrassed... but also had a very wet pussy when she got home.
This would usually lead to some dry humping (during class if you can believe it) and also an invitation to "do a little herb" (share a blunt) after school, typically in teacher's (aka my wife's) car. Things really got out of hand after that, once the others learned that "Mrs. D, the teacher, is a slut".