From the South:
Take Route I-93 North to Exit 4.
Bear left and follow Route 102 for 7.5 miles.
Alvirne will be on the right.

From the North:

Take Route I-93 South to Exit 4.
Bear right and follow Route 102 for 7.5 miles.
Alvirne will be on the right.
From Route 3:

Take Route 3 North to Exit 2 (Hudson).
Take a left at the end of the ramp onto Route 3A North.
Follow 3A North approximately 3-4 miles. Route 3A and Route 102 intersect at the lights. (Landmark: True Value Hardware).
Continue straight thru the lights (still on Route 102).
Alvirne High School is approximately .25 mile on the left.