The Missoula County Attorney’s Office declined to take additional action against the officer after reviewing findings from the state Division of Criminal Investigation.
The officer was placed on paid administrative leave following the shooting at Big Sky High School in March. Authorities claimed the teenage student drove at the officer.
The student is scheduled to be sentenced later this month for charges that include criminal endangerment and criminal possession of dangerous drugs.
Prosecutors declined to release the state investigation, saying it is “confidential criminal justice information.”
The Missoula Police Department’s internal review found the officer’s actions were reasonable and did not violate policy.