How to process when your teenager hurts another

A situation occurred in the beginning of the year in which my high school son physically hurt another (and we were there to see the aftermath). Although several months have passed, and there’s been some natural healing, I still am uncertain how to process the situation. It’s a great way for me to practice my modeling, and I have plenty of thoughts and feelings and actions/results. But I have difficulty identifying the circumstance. i realize this may seem simple: “My son got into a fight with another boy.” But in my mind it’s really more of, “My son hurt this other boy.” yet I’ve been told that that is not a neutral statement. I don’t see how this is not factual when my son did throw him down and the boy was clearly physically hurt (bump on his head, dazed). Thank you!