This data represents boundaries for Cooperative Educational Service Agencies within the state of Wisconsin in 2023. [Cooperative Educational Service Agencies are intermediate service agencies that provide programs, services, and resources to a region of school districts in the state of Wisconsin. This dataset was assembled using county-derived school district boundary data and school district information from the Department of Public Instruction website. Each year, there is a chance for reorganizations to take place that either transfer territory between school districts or consolidate/dissolve/create districts. These reorganizations go into effect on July 1st of each year. Sometimes reorganizations involve CESA boundaries as territory transfers between school districts located in two different CESAs. In 2021, there were no reorganizations that caused changes to CESA boundaries. The E8 database contains a collection of all uniquely identifiable local-level PLSS data available in digital format, and aggregates that data into a standardized schema and format. It also includes section, quarter-section, and quarter-quarter-section level polygons. The construction of the PLSS corner locations contained within the database relies on the local level coordinate information. This unique aspect of the database, allows for an accurate representation of the on-the-ground location of the PLSS corners.]