The phrase "recess period" refers to a break or free time given to students during their school day to play, relax, or do any activities they enjoy. Full definition
How can we help highly energetic and competitive boys to regulate their emotions during recess periods? (mentoringboys.com)
My classes had a 15 - 20 minute recess period around 10:00 AM before returning to studying for 2 more hours, followed by lunch at noon. (well.blogs.nytimes.com)
Each grade was given its own recess period of 23 minutes, followed by 22 minutes for lunch. (educationworld.com)