In search of a financing option that could keep students enrolled full time through graduation, officials landed on the income-share agreement (ISA). The financing tool allows a college to front a portion of students' costs in exchange for a share of their post-graduation income for a set number of years once they reach a predetermined earnings level. That means higher-earning students pay more while lower-earning students pay less, though most contracts cap the repayment amount at around double the amount borrowed.
https://www.educationdive.com/news/5-questions-for-colleges-considering-income-share-agreements/558054/
