The Great Oaks Institute of Technology and Career Development, or Great Oaks, is a joint vocational school district that has operated in parts of southwestern Ohio since 1970. During their junior and senior years of high school, students from 36 Ohio school districts have the option to attend one of four Great Oaks campuses, known as Career Development Centers. Diamond Oaks in western Cincinnati, covers the Finneytown, Mt. Healthy, North College Hill, Oak Hills, and Southwest, and Three Rivers school districts.