School is about studying, first of all. But no child in the world can study for 6 or even more hours daily. One needs some change of activity, some entertainment. That has practical dimension as well. When you get some rest and relaxation, although it may be active, you will work more productively afterwards. Thus, for example, if school students arrange some humor shows or concerts, or sports competition, they get a lot of positive energy. Indeed, if you constantly make various assignments, write essays, prepare some projects, search - Internet heavily and spend a lot of time on the computer, it is natural to get exhausted. That is why schools should offer captivating activities for students, along with interesting studying process. This will ensure effectiveness of overall educational process.