This act shall be known and may be cited as the "Public School Code of 1949." The provisions thereof shall become effective on the first day of July, one thousand nine hundred forty-nine, except in so far as they affect school districts of the first class. In so far as they affect school districts of the first class, the provisions of this act shall become effective on the first day of January, one thousand nine hundred fifty.
24 P.S. § 1-101