The Hillsboro School District 1J is a unified school district located in Hillsboro, Oregon, United States. The district operates 26 elementary schools, four middle schools, and four high schools. Founded in 1851, the school district covers Hillsboro, Scholls, Reedville, North Plains, West Union, and other area communities. Total enrollment as of the 2019–2020 school year is 20,269 students, the fourth largest in the state.

Hillsboro is a city in the U.S. state of Oregon and is the county seat of Washington County. Situated in the Tualatin Valley on the west side of the Portland metropolitan area, the city hosts many high-technology companies, such as Intel, locally known as the Silicon Forest. The population was 106,447 at the 2020 census, making Hillsboro the 5th most populous city in Oregon.