Northgate School District is a diminutive, suburban, public school district located in Allegheny County, Pennsylvania.

It serves the boroughs of Bellevue and Avalon, Pennsylvania.

Northgate School District encompasses approximately 1 square mile (2.6 km2).

According to 2000 federal census data, it serves a resident population of 13,113.

The district offers a variety of clubs, activities and sports.