Does it mean "The tuition" or "the interest of the tuition"? (For example, the tuition is 50,000 USD, and after 1 year unpaid by graduates, it may become 60,000 USD.)
"Students who enroll in the San Francisco or New York campus can defer payment until after graduation. In return, the school can collect a share of your first-year salary once you earn $50,000 in total compensation. No additional tuition is charged if you don’t find a job within one year of graduating."