National Law Journal, Divorced Parent Paying for College Can Demand to See the Report Card:

A divorced parent funding a child’s college education can demand the student’s academic records as a condition of payment, a state court judge says in a case of first impression. …  “A child who demands financial contribution from her parents logically has a reciprocal obligation to provide basic information concerning college attendance and performance,” [the judge] wrote in Van Brunt v. Van Brunt, FM-15-091-08. He called the situation “wholly unacceptable and violative” of the rights of the father who was obligated to pay college expenses.