So it ended up being that during a 5 minute break in class when there was no teacher/adult in the room, another kid was sitting down pretending to be Santa and my son tripped and landed in his lap. In an "attempt to protect himself", the other kid put his hand out and touched my sons crotch. So she was calling to tell me they were both goofing off and my son would be kept in from recess the rest of the week. ???