Not treating the children will only level the playing field. My two daughters, 5yo and 3.5yo, both sleep from "as late as they can get away with" to "about an hour earlier than parents would like to wake up".

Also, whoever came up with the idea of nap hour in kindergartens has a special circle of hell reserved for them.

I mean I also don't give my son caffeine (because he's 2) so this seems like a reasonable assumption.

Teenagers stay up too late anyway so I'd say this sort of thing would be a good way to hopefully reduce the effects of sleep deprivation.