Receive your student loan check either from the school itself or from the loan company. Depending on the loan you signed up for, it either goes directly to the school and you receive the remaining funds, or the student loan facility sends you the check and it is up to you to pay the funds to the school.
Deposit the check into your banking account. These checks tend to clear rather quickly as the banks are extremely familiar with the financial lenders.
Write out a check from your checking account for your monthly rent. Once the funds are deposited into your account, it is just as if you received a large check from a family member.