I agree with leehuan, different schedules work for different people. The only important part is a strict study schedule and that you stick with it. For me its
3:25 - 6:00 Free time
6:00 - 7:00 Dinner
7:00 - 9:30 With a 15 minute break at 8:00, Studying material and completing work from the day, then if i finish that i start on reviewing my notes with the Cornell notes system.
Then on Weekends in the morning and evening I go through my notes and review all the notes from the Term, drilling them into my mind, and also reading around the subjects.
A Joke from my Chem teacher
Do it once: Atar - 50
Do it twice: Atar - 75
Do it three times: Atar - 99.95
The most important thing is consistency and sticking with it. In my schedule there is plenty of free time that i can expand into if i need to for more study.
Personally I don't think it's a good idea to have that much free time early after school, rather I feel that studying first then rewarding yourself is a better idea.
My study pattern fluctuates depending on how many Assessments are coming up, homework, and lessons that I didn't understand.
Adjust how many hours depending on the difficulty on the subject and how long it takes to do the work.
E.G. A day where Chemistry, Business Studdies, MEX1 & MEX2 require work.
3:10 - 4:00 Eat, watch videos etc.
4:00 - 6:00 - Take 1 hour each for Chemistry & BST.
6 - 7 - Eat.
7 - 11 - 2 Hours each for MEX1 MEX2.
A day where not much is relevant and fairly carefree.
3:10 - 4:30 Relax your mind, take a nap etc.
4:30 - 6:00 Finish relevant homework or revise on material.
6:00 - 7:00 Eat
7:00 - 11:00 Create notes, study ahead on topics, and also a mix of procrastinating.
Weekends you should be doing homework and revising on material that wasn't fully understood. Personally I don't create notes before hand, but rather make them 3 or 4 weeks before an exam or a week before an assessment so I'm able to understand what I wrote and remember vaguely the basics of the topic. Doing past papers for Maths is also important as most likely, all topics will be relevant in your work.