From I-95 traveling North:
Exit 87 (Richmond Hill, Coastal Highway 17).
Turn right off I-95 onto Highway 144 
Turn right onto Highway 17 (North).
Turn right  onto Harris Trail.(1st Light on Right)
Richmond Hill High School is on the Left (Just past the Richmond Hill Middle School & before the tracks)
 

From I-95 traveling South:
Exit 87 (Richmond Hill, Coastal Highway 17).
Turn left off I-95 onto Hwy. 144
Turn right onto Highway 17 (North).
Turn right  onto Harris Trail.(1st Light on Right)
Richmond Hill High School is on the Left (Just past the Richmond Hill Middle School & before the tracks)