The 58 counties in California each have a county office of education (COE). Their size, governance structure, and the services they provide vary across the state.

The smallest is Alpine County at the central eastern edge of the state, with a total enrollment in the whole county of 133 students and just one school district. At the other extreme is Los Angeles County, which has a total enrollment of 1.7 million and 80 separate school districts.

All county offices have a superintendent and board, but the method for selecting them varies. In some cases, the County Board of Supervisors appoints both the superintendent and board; in some, both are elected by voters; and, in a few, an elected board selects the county superintendent.

Most COEs provide services and provide oversight for multiple school districts. However, seven counties have only a single school district with the same geographic area as the county office. In these counties the lines between county and school district administration are often blurred.

County offices also administer the work of the County Committee on School District Organization. This body, which is elected by local school board members, reviews all requests for changes in school district boundaries and configurations (such as unification). Many of this committee’s recommendations must go the State Board of Education for approval and some eventually go to voters.

Based in part on the size, needs, and practices of their local school districts, COEs oversee, support, and supplement public education within the county. Their responsibilities include:

Oversight of district finances

By law, county offices have fiscal oversight over the districts within the county, and over some charter schools. The county superintendent must review—and approve or disapprove—each district's annual budget and two interim financial reports. In addition, the county superintendent, who is responsible for ensuring districts' sound fiscal operation, must take specific actions if a district may not be able to meet its financial obligations (Education Code sections 42120 - 42129). The Williams v. California lawsuit settlement in 2004 further increased the COEs' role in monitoring the quality of school facilities, instructional materials, and teachers in local districts.

Services to school districts

COEs, especially those in rural areas with small populations, provide many important business services to their school districts. According to law (Education Code sections 1700-1946), county offices may offer administrative and educational support services to small districts such as supervision of instruction, attendance and health services programs; guidance services; library services; and training and education of prisoners.

The level of administrative services provided by a COE depends on the size of its school districts, with some of the smallest districts, also known as "direct service districts," outsourcing all their business office functions to the COE.

In addition, county offices are hubs for centralized services such as professional development programs, instructional media, and closed-circuit broadcasting.

Special schools and educational programs

County offices also receive local, state, and federal funds to provide direct educational services. They usually offer special instructional programs targeted to "at-risk" students, such as children with exceptional needs, homeless students, pregnant minors, and juveniles detained in homes and camps. By law, some programs such as Juvenile Hall classes can only be provided by the COE. However, county offices and school districts sometimes provide similar services, such as vocational education and special education for students with disabilities.

County offices offer and manage training programs funded by the federal government, such as Head Start and CalWORKs as well as programs for Indian Education and Migrant Education.

Financial data and reporting

As local education agencies, county offices operate under the same budgeting and fiscal accountability requirements as school districts generally. The state provides the same financial oversight for COEs that counties provide for districts. On the Education Data Partnership website you will find robust financial reports for each county office that describe both its revenues and its expenditures.