I guess first we have to figure out exactly why parents are giving their children melatonin. If it's for not falling asleep at a particular time, then a nap tim

I guess first we have to figure out exactly why parents are giving their children melatonin. If it's for not falling asleep at a particular time, then a nap time may not help. If it's because the children appear to be tired in the morning, then a nap time might help. Children in general are growing, and need more sleep than adults. I don't know that it particularly matters how this sleep is distributed. I do know that my preschool had a naptime, and that I occasionally nodded off as an older kid on the school bus. I think extending naptimes from pre-school into later school years is an idea worth investigating.