I should have clarified that I was asking mainly about 4yr olds.Â
@KT0721:
A 4 year old should be offered a nap. If they don't sleep consistently they should be allowed to do something quietly without disturbing the others who do nap.
When I was teaching I would have all my kids lay down and at least rest. If within 20 minutes or so they weren't asleep I'd let them get up. 4951