I was in a Foothill High School classroom and some of the girls were sharing experiences of their middle school P.E. teacher, who they said would look at their bodies in a way that made them feel uncomfortable. I asked if they had told anyone. They said that they had told their parents and had also told the middle school principal. I asked what happened, and they said, nothing, 'the principal told us the P.E. teacher wouldn't do that'.
I didn't ask them which middle school or which teacher, but you should periodically bring up the subject of adults who make kids feel uncomfortable, and see what your kids share.
I asked my teenaged neice and she told me something surprising and upsetting (she does not live or go to school in Pleasanton).
I know that there was a school photographer (in Pleasanton) that some parents who were volunteering on photo day thought was touching the girls way too much. Someone told him to stop and supposedly he backed off and behaved appropriately after that (a parent volunteer told me this).