Let kids in older grade not just little kids to beagle to have sleep time during the day it will help kids get refreshed

I want older kids in middle school, high school, and higher elementary to be able to have the choice of napping for a period of day. It will let kids relax, focus, and get refreshed. I have had kids saying that we are tired and that we want to have nap time and its I would like to fix there being to tired problem.