The boundaries of the district are coextensive with the boundaries of the following school districts, all located in Lavaca County, as those boundaries existed on March 13, 1975:
(1) Hallettsville Independent School District, including the Moravia School District No. 7;
(2) Ezzell School District No. 54;
(3) Vysehrad School District No. 29;
(4) the part of the Oakland-Weimar Independent School Districts of Colorado County that is located in Lavaca County; and
(5) the part of the Provident City Independent School District that is located in Lavaca County.