Is this for a live-in nanny? If not how would the nanny only work 40 hours a week but still be working when driving the preschooler to school BEFORE 9am and AFTER 5pm?
I'm not the OP but we had the same type of schedule. Preschool isn't like elementary school. 9 am usually means that drop off occurs anytime between 8:45 and 9:15 or even 9:30. Pick up was the same way. It was technically at 3 but car lane pick up started at 2:40. They would always be home by 3pm.