Oak Grove School was established according to local tradition as early as 1882 and was named for a grove of post oak trees near its original one-room building. Probably offering primary through eighth grade instruction, it stood on property owned by August and Ernestine Wenske, and the first recorded documentation of the school appears in an 1894 deed executed by the Wenskes for the sale of land for school purposes. The building was enlarged in the early 1900s into an L-shaped structure, and in 1909 the school added another teacher to its faculty. A new three-room schoolhouse was built in 1928, and by 1937 the faculty had grown to three persons. The Public Works Administration upgraded the main road to the school between 1938 and 1942. Supported by community fund-raising activities, the school had advanced its curriculum to the tenth grade by the mid 1940s, but it closed after the 1959-1960 term when it merged with the Moulton Independent School District.