I have only had one teacher parent and her kids were the first to be dropped off and the last to leave ever day (pick-up time was 5:30pm). And she was a supply teacher, so usually didn't have prep to do. She admittedly would go home, walk the dog, cook dinner, etc and then come and get the kids at the last minute. So, I think it depends more on the parents and less on their work hours or profession. Set your hours to something that works for you and then they will have to pick up by that time.