You can copy and transfer your school's Google account files to another Google account (such as your own personal Google account). This process lets you:
- Back up your files from time to time.
- Keep important files when you graduate, switch schools, or leave for another reason.
Please follow this link's directions on how to make the transfer: https://support.google.com/accounts/answer/6386856
You can also download your data instead if you do not want to transfer to another Google account.