Students should be able to leave school and return home after important examinations (GSCE, etc) to Rest after a long period of time in exams. Students are often exhausted and fall asleep in lessons or don't go to them at all, going home would allow them to have some time for themselves and to gain extra energy for the next exam instead of draining it away in a loud classroom full of students. As a student myself, I find that two 1 hour and 50 minute exams make me lose focus during lessons, being able to go home early would initiate better performance in the next exam as I would be well-rested and prepared. Students can also use this home-period as a revision segment allowing them to work in peace in preparation to exams, also initiating better exam performance.