The loan that requires a student to pay the interest they accumulated during college is called an unsubsidized loan.
There are also Federal unsubsidized loans. They are charged interest on these loans while the student is in school and also during a grace period. The student who borrows the money can choose to pay the interest every month or choose to have it put on the outstanding principal of the unsubsidized loan. Many colleges will tell the students to make a all to their loan service and set up an interest payment account.