Del Mar Union School District (DMUSD) is a public school district based in Del Mar in San Diego County, California.
[3] For many years, the district was small, serving approximately 1,000 students in the City of Del Mar.
However, in the 1990s, the district's boundaries were expanded to include the newly developed Carmel Valley subdivision in the City of San Diego.
Today, approximately 4,000 children attend the district's eight schools.
Individually, Sage Canyon School has posted the highest Base APIs scores in the County from 2004 to 2008.