Mason Hartkey, 19, was driving a Chevrolet Colorado that weaved off the road and hit the Rineharts' parked vehicle. Hartkey suffered a broken arm and was taken to the hospital.
Josie Rinehart, 18, suffered cuts and was taken to the hospital.
The school shared its condolences on Facebook:
"Please hug, cry, laugh, sing, and pray for each other today and the next day… and every day. That's what the Rinehart's would want us to do."
The crash investigation is ongoing.