 This is over 1,900 square miles, making the ECOESC service regions one of the largest in the state.The ESC serves eight local school districts, four exempted village school districts, six city school districts, two vocational career centers, and two Board of DDs serving 28,085 students and 2,054 teachers across its service area.The Ohio General Assembly created educational service centers in 1914 as county boards of education.