From the Oakland/SanFrancisco Bay Bridge: Take Hwy 580 East towards Hayward. Take the Fruitvale Ave. exit and proceed on Harold St. 5 blocks to Coolidge Ave. Turn right onto Coolidge and continue 3/4 mile to the Patten campus, which is on the right side.
From the San Mateo Bridge: Take the Downtown Oakland exit to Hwy 880 N. Turn off at Hwy 238 exit that moves eastward toward Hayward. Take the Hwy 580 West exit toward Oakland. Continue on 580 West until the Fruitvale/Coolidge exit. Take the exit and make a left at the stoplight onto Coolidge Avenue. The campus is located about 3/4 mile west on Coolidge Ave. on the righthand side.
From the Caldecott Tunnel: Proceed on Route 24 towards Oakland. Take Hwy 1 East towards Hayward. Take the Lincoln Avenue Exit. Turn right, down the hill to MacArthur Blvd., then right (two blocks) to Fruitvale Ave. Turn left on Fruitvale and go about one mile to Logan St., and turn left. Go one block to Coolidge Ave. The campus is on the right.
For specific directions from your location go to Yahoo Maps.