Talk about the business opportunity! You'd be surprised at how many kids at that age will retain the info! I can see them now, going home & instructing their mother that she needs to have her own business so that she can set her own hours, work as much or as little as she wants & be off when she wants to participate in PTA activities, sporting events, etc.! LOL
I was a Police Dispatcher working night shift when my 3 nephews came to live with me. I'll never forget the day the 1st grader came home from school & informed me that I was nocturnal! LOL He had learned about bats that day in school and associated the "being up at night" thing with me. Children really do retain a lot at that age!!!