Structured recess in elementary school and such is usually around 30 mins a day. You'd also have gym class that might meet outdoors on the athletic facilities i

Structured recess in elementary school and such is usually around 30 mins a day. You'd also have gym class that might meet outdoors on the athletic facilities if the weather is good for it, that would be a full class period maybe 50 mins with some time banked in to change in an out of your gymwear in the locker rooms. In highschool your schedule might look a little more "collegiate" where you might elect to take certain classes (even local community college classes potentially that you could count for college credit in undergrad), and might end up with some free periods during your day if schedule permits. When I went to school people would use those free periods either to do homework, slack off, go home early, or smoke weed in the woods. In college on the other hand you might only have a class or two a day depending on your schedule.