An Act amending the act of March 10, 1949 (P.L.30, No.14), known as the Public School Code of 1949, in professional employees, further providing for definitions and for duty to employ, repealing provisions relating to minimum salaries for teachers and providing for minimum salaries for professional staff members; and, in reimbursements by Commonwealth and between school districts, repealing provisions relating to special payments on account of minimum salary increases and providing for special payments on account of minimum salary increases for professional staff members.