In 1893, Ohio and Indiana constructed the first Union School on the state line separating the two states at College Corner, Ohio, and West College Corner, Indiana. For 111 years, students from both states were educated in the only schoolhouse located in both Ohio and Indiana. In 1925, a new Union School was designed to replace the old schoolhouse, and it was dedicated on December 21, 1926. A new addition was added in 2004. The building includes special architectural features such as a center stone placed on the Ohio and Indiana state line and arched doorways for each state, and the bell from the 1893 school is displayed on the south side of the current school. For 111 years, residents of College Corner in Preble County and Butler County, Ohio, joined with residents of West College Corner in Union County, Indiana, to educate their children at the College Corner Union School. The school served grades K-12 until 1972, when students in grades 9-12 were transferred to Union County High School in Liberty, Indiana. In 1995, under the direction of a Federal Magistrate, the Union County-College Corner Joint School District was reorganized, creating a nine-person board of trustees with Ohio and Indiana representation operating under the laws of Indiana. The district is significant as the last joint state school district in Ohio and Indiana and possibly the only such school district remaining in the United States.