There is an installment plan on your entire bill, so tuition plus room and board:
http://www.purdue.edu/bursar/payment/installment.html
Its three installments. However you are paying Purdue some interest, 8%, for the amount you owe,
so its going to cost you more to pay by installment. You can calculate what that will cost to see if
it works for you, or you would rather pay the lump sum up front.