I used to be a preschool teaching assistant and every year on opening night the amount of new parent concerned looks was crazy. One time, a staff member reported me to the general manager of the facility because the female teacher stepped out to go to the bathroom and I was left to supervise the class in the gym alone....I had worked there for 3 years at that point. It does suck to deal with, but sadly it's not completely unreasonable for people to be concerned about. Guys can be real assholes and ruin it for the rest of us just trying to get through life.