S.T.
My sister watches kids during the day. She will be driving one to preschool, but she would already be taking her daughter there so she kind of has a different situation than you. She charges $30 per day per child. If the child is there for more than eight hours she charges five dollars per 1/2 hour after eight hours. I know $30 is on the high end, but she was an elementary school teacher, is a parent educator (parents as teachers) and is infant/child CPR certified. She runs a structured day for the children. That is what the parents are paying for. I hope this helped.