The state board of regents may out of funds appropriated or otherwise available for the operation of the institution at which the laboratory school is located allocate an annual payment to the debt retirement fund for the buildings, areas, and facilities used by the institution for the laboratory school until such time as said improvement is fully paid. The board of regents may pledge said annual allotment together with the tuition received from school districts and all other income received from the operation of said laboratory school as security for the mortgage, bonds, or other debt by which said laboratory school is financed as authorized herein.
Iowa Code § 265.5