Northgate High School

425 Castle Rock Rd.
Walnut Creek, CA 94598
(925) 938-0900

Take Highway-24 east through the Caldecott Tunnel
Take the Ygnacio Valley Rd exit 
Turn right on Ygnacio Valley Road
Go approximately three miles and turn right on Walnut Avenue (NOT Walnut BLVD)
Go past two signal lights to end of street and turn right on Castle Rock 
School is three blocks down on the right side

Link to MapQuest:
http://www.mapquest.com/directions/main.adp?bCTsettings=1