How Can I Organize Myself In School?

The greatest thing I ever did was to take some training on HOW to take NOTES, and see what points your teacher is bring out in class!
For those points WILL be on your test!
IT WORKS TOO!
Logic101

By setting a plan out on what classes you going study in and learn more the field you about learn and study and focus on the classes you have to pass to get ahead. Study hard!!!! But take a break now and then.

Keeping good track of your assignments and taking good notes. When studying if you get tired take a break or switch to a different subject for awhile.

Organizing isn't always easy. I had a system that seemed to work for me when I was a kid. Try to follow me here.
I had a locker of course. I kept it as empty as possible.
I would stack my books in the order that they were going to be used the next day and I would place them on the top shelf in the locker at the end of the day.
As the next day went along, all I would have to do is take the top book off of the shelf, and get to my class, after the class was over, I would simply put the book on the bottom of the locker, and take the next classes book off the top shelf.
At the end of the day, I would reverse the order of the books, so that they again were set up for the next day. I kept one binder for all subjects, and took that one with me everywhere in school, and at home.
Taking notes will be easier because you designate one section to one class, and another to another class. Then all of them are with you all the time, and there isn't any need to scramble to find them. Course, I was a little bit of a nerd, I liked school. Hope this helps, good luck.