Section 1. Lengthening of School Calendar. —

Any provision of law to the contrary notwithstanding, the school calendar for each year beginning school year 1995-1996, shall be lengthened to not more than two hundred twenty (220) class days, inclusive of class days which may be subsequently suspended due to natural or man-made calamities.

The increase in the number of school days during the school year shall not be considered as a basis for additional pay for teachers who are paid salaries for the entire twelve (12) months of a school year: Provided, That the preceding provision shall not apply to those who are paid salaries computed by the number of hours they actually teach or whose salaries and hours of work are governed by existing Collective Bargaining Agreements (CBAs).