Only the interest on the loan, and only if it was a qualified student loan, would be deductible. Now if *YOU* have enough earned income in that same time frame, then I would leave the loan out of it completely and report it "as if" you paid the education expenses directly. This will not work if you took out the loan in 2019 and paid it back in 2020 if you did not have sufficient earned income in 2019 to just ignore the loan completely.
