The tax duplicate to be certified by the county commissioners, the city clerk, or other proper official, to every school district of the second, third, or fourth class shall, in each proper district, include such territory as was attached to another district but by the provisions of the act, approved the eighteenth day of May, one thousand nine hundred eleven (Pamphlet Laws 309), became a part of the district in which it is situated on the first Monday of July, one thousand nine hundred eleven.
24 P.S. § 6-678