How you pay your second semester (or quarter) tuition depends entirely on the college's payment system. A "refund check" usually indicates you've overpaid for the *first* semester. You wouldn't normally get a check for the *second* semester until *after* you've paid for it.
To apply the refund check to your second semester's tuition, you'll need to:
1. Contact the college's bursar's office or student accounts department. This is the department responsible for tuition payments. Their contact information is usually readily available on the college's website.
2. Explain that you have a refund check and want to apply it towards your second semester's tuition. They will guide you on how to do this. They may have an online portal for applying payments, or they might ask you to mail the check with a specific form indicating its purpose.
3. Follow their instructions precisely. Failure to do so might delay the crediting of the payment to your account.
In short, you don't use the refund check *directly* to pay your second semester. You use it as a credit towards your second semester's bill. Contact the bursar's office for specific instructions on how to do this at your college.