There are two options. One is to deposit only the extra part of your loan into the school card, and go through a tuition deferment procedure after you register at school. The school will first deduct the extra part of your loan, etc. Once the loan is received, your tuition will be paid in full. The other option is for the school to deduct the entire tuition fee normally, and after the loan is received, the school will credit the loan portion back to your tuition bank card.