An Act amending the act of July 9, 1968 (P. L. 299, No. 150), entitled "A Supplement to the act of March 10, 1949 (P. L. 30, No. 14), entitled 'An act relating to the public school system, including certain provisions applicable as well to private and parochial schools;'***," providing for four-year terms for directors beginning in 1977.