Do you get enough sleep response

What makes this issue challenge/complex is figuring out how to arrange the schedule of things so that students get the right amount of sleep they need. The main factor you see is fitting a napping time into the school schedule because sleep helps you recharge and something like a 90 min sleep during lunch increases your learning abilities. There could also be a variety of issues.
It is also the question I see which is what is causing this lack of sleep is it the workload put on students or just in general that students sleep late? What would be the minimum amount of sleep required to make yourself prepared for learning? The opinion of schools on the matter of lack of sleep.