Gaston School District 11J is a public school district in Washington County, Oregon, United States serving the city of Gaston. The district was established about 1852 and later the Wappato (511J) and Yamhill (555J) districts in neighboring Yamhill County merged into the district. It is a two-school district, consisting of Gaston Elementary School Archived February 22, 2017, at the Wayback Machine and Gaston Junior/Senior High School. Both the schools and the district offices share a single campus in the center of Gaston, bordered on the north side by Park Street and on the East side by 3rd Street.