Richland School District #400 serves the cities of Richland and West Richland, Washington.
As of 2020, it serves approximately 13,900 students in grades pre-kindergarten through grade 12.
The school district operates a total of 21 schools, including elementary, middle, and high schools. It also operates an early learning center and a virtual online program. The school district houses students in Delta High School and Tri-Tech Skills Center in partnership with both the Kennewick and Pasco school districts.
The school district's superintendent, Shelley Redinger, has been serving since June 2020.