The Northwest District is made up twelve teams from a combination of Region B Class 3, and Region D Class 4 schools. CSOA provides officials for just six Northwest District schools. (Updated 3/4/23)

Links are to school athletic websites.

Class 3 Region B

Brentsville Tigers

Fauquier Falcons

Kettle Run Cougars

Manassas Park Cougars

Meridian (formerly George Mason) Mustangs

Class 4 Region D

Liberty Eagles