I think you may be overreacting.
Your reaction was troubling. He said nothing wrong. Work on your own insecurities.
Go ahead and fuck up his life by forwarding his comments to the school’s administrators.
I’ve heard this comment before oddly enough it’s been used to describe males. I guess my point is it could be harmless. I p err so ally wouldn’t say that about a teenager especially as a teacher.
Go to a therapist because you’re right and your comment was reasonable, but I’m guessing your husband is going to use your own problems with anxiety and attachment styles to turn it against you. The fact that he blew up immediately means that you hit the nail on the head, something about what you said was absolutely right and he knew it too but was avoiding it and didn’t want to think about it. Think about it as he was already boiling over on this issue internally, and then you focused a beam on the issue and he Blew up and took it out on you, likely made you feel like you were insane or said it was your fault and that none of it was true. If he reacted this harshly there’s likely more behind this than what you noticed. I would definitely go to a therapist so they can help you figure out what’s normal and not and also so they can help you identify normal reactions and abusive reactions. It seems like your SO has some real issues with the way he behaves and toxicity or abuse is a highly probably factor in his behavior. Just take care of yourself. You were absolutely right to comment on this and you were not wrong about this at all. Don’t let him turn this on you. If he shows disturbing behavior/anger/reactions and mistreats you emotionally, verbally, OR worse then definitely go to a therapist and seek some help.