1. Be prepared with the right school supplies! Don't rely on those too long lists that stores have near the school section. Make sure you only buy what is actually helpful for you and your study habits! I find that having a notebook and folder for each class is perfect to keep myself organized.
3. Head into the school year with a positive attitude! Put good things out there and good things will come back to you :)
4. Find a place to study (that makes you uber productive)! This can be a certain room in your house, a library, coffee shop, etc. If you find the perfect environment that makes you productive, you will have success in your studies.
5. Stay on top of your work! I know this sounds really obvious, but students always put things off every once in awhile.... Resist that urge, and you will never fall behind!