Mountainside Schools
The Mountainside School District is a community public school district, that serves students in pre-Kindergarten through eighth grade in the borough of Mountainside, in Union County, NJ.
As of the 2012-13 school year, the district's two schools had an enrollment of 777 students and 55.6 classroom teachers for a student–teacher ratio of 13.98:1.

Elementary Schools
-
Beechwood School (K-2), 1497 Woodacres Drive
Middle Schools
-
Deerfield Middle School, 302 Central Ave
High School
-
Governor Livingston High School, 175 Watchung Blvd
Public school students in ninth through twelfth grades attend Governor Livingston High School in Berkeley Heights, as part of a sending/receiving relationship with the Berkeley Heights Public Schools.