Best way to avoid traffic:

75 N

Exit # 285 (Red Top Mtn)

Turn Left off exit

Rd. dead ends into Cobb Pkwy (GA 41) - turn left

Turn Right. onto Black Acre Trail.

At first stop sign, turn right onto Harmony Grove Church Rd.

Then turn right  into the school. 

Drive in front of the school/stadium and park bus behind the school.