BACK A BOILER - ISA FUND IT'S NOT A LOAN. AND YOU'RE NOT ALONE. A new innovative option to fund a Purdue education. It's not a loan. It's not a grant. It's something new and different, providing freedom and flexibility in funding your education as a Boilermaker. It's the Back a Boiler™ Income Share Agreement (ISA), managed by the Purdue Research Foundation.