The amounts due to any educational or training institution pursuant to N.M. Stat. Ann. Chapter 28, Article 14 shall be payable to those institutions on vouchers signed by the secretary of veterans’ services or the secretary’s authorized representative. The veterans’ services department shall determine the eligibility of children making application for the benefits provided in N.M. Stat. Ann. Chapter 28, Article 14 and shall satisfy itself of the attendance of the children and of the accuracy of charges submitted to the department. No staff of the department shall receive any compensation for this service except as provided in the Per Diem and Mileage Act N.M. Stat. Ann. § 10-8-1 to 10-8-8.