There is also a county educational service center (previously known as the county board of education) presided over by a board of education, typically numbering five members, elected to staggered four-year terms in non-partisan elections in odd-numbered years. The center supplies services to the individual school districts in the county and exercises some limited control over the class of school districts known as "local school districts." ("City school districts" and "exempted village school districts" are free from any oversight by the county board.)