(a) No teacher shall be placed on the payroll of a local school administrative unit unless he holds a certificate as required by law, and unless a copy of the teacher's contract has been filed with the superintendent. No teacher may be paid more than he is due under the local school salary schedule in force in the local school administrative unit. Substitute and interim teachers shall be paid under rules of the State Board of Education.
(b) The board of education may withhold the salary of any teacher who delays or refuses to render such reports as are required by law, but when the reports are delivered in accordance with law, the salary shall be paid forthwith. (1955, c. 1372, art. 6, ss. 11, 13; 1975, c. 437, ss. 8, 9; 1981, c. 423, s. 1; 1985 (Reg. Sess., 1986), c. 975, s. 19.)