Change all school policies nationwide to start school at a later time after 7:50 a.m

This great country cannot control the time students decide to go to sleep but it can over see what time they should wake up. School has students rising as early as 5:30 a.m for school, some students go to bed as late as 11,12 p.m this is a problem as many don't get enough sleep.
Making a policy for all schools to start just even 10-30 minutes later would benefit many students nationwide. Looking at studies, sleep is a great plus for health and performance throughout the day. Schools should commence at a later time than already established in all high schools. Adding 10-30 minutes to what is all ready established. For example 7:45 is a start time with this reform it would now start at 8:05, or 8:10,etc. This would be greatly appreciated by many students and parents.