Construction of Auburn Mountainview began in 2004 in the Lea Hill area of Auburn, Washington. The school was built to relieve overcrowding of the district's other two main high schools, Auburn Senior High School and Auburn Riverside High School. Mountainview opened its doors to the community in the fall of 2005. Nearby Rainier Middle School is the primary feeder school with a small number from Cascade Middle School as well as some Kent area students. The school is close to the Auburn-Kent border. Because of perennial troubles with overcrowding in many Kent schools, about 40% of the Auburn Mountainview student population is made up of Kent area students.