To be honest I really don't see the point of this, my school days are already too lengthy, why on earth do I need 2 hours 'study' periods then 20 minutes break and another hour lunch break??? All that time just means I lose focus on getting work done, my days are much more productive when I come in and go straight from lesson to lesson with only one small 20 minute break. I am also done by about 1pm when I do this which means I can come home for lunch.
Compared to my least productive day in which I have 2 study periods and an extra hour lesson at the end of the day. By the time I get to that last lesson I feel groggy and am not in the mood to do any learning. Well, that is just my experience anyway.
Personally I would get rid of all these breaks and have short high intensity days at school, it helps keep my focus and I remain ready to learn throughout the day, also everyone is happy when they can leave at about 1pm as opposed to 4:20.