Riverview School District (Washington)
Riverview School District No. 407 is a public school district in King County, Washington, USA and contains within its boundaries, the communities of Duvall, Carnation, and the surrounding areas. As of 2020, the district has an enrollment of approximately 3,300 students. History. In 1988, Tolt Junior/Senior High School split into Tolt Middle School and Tolt High School. The high school later closed when its replacement, Cedarcrest High School, opened in 1993. Tolt Middle School is still located on the original Tolt Junior/Senior High School campus.