§ 4112. Commissioner of education to contract for keeping of truants. The commissioner of education may contract with any city or district having a school for delinquents, for the confinement, maintenance and instruction therein of any child who shall be committed to such school as a truant by any magistrate before whom such child shall have been examined upon the charge of truancy. The costs and expenses attending the support and maintenance of any truant, as herein provided, shall be audited by the commissioner of education and paid in the same manner as the expenses of supporting and maintaining the schools on a reservation are paid.