I have been in a similar position myself. It's a really tough one because he's a teacher of your child and there's undoubtedly a set of conflicts there.
It should teach us nature to be kind and caring and they are traits you want to find in a partner a lot of the time. Not sure on the school system in your area but maybe wait until your child's finished at that school.
But I would certainly be very wary in blurting out your feelings. Maybe drop a few subtle hints about? Is he in a relationship to confirm.
Alternatively, just view it as you're now looking for a relationship as you have feelings to him and join social clubs or dating apps and see if you come across anybody else you like. But there are loads of great caring blokes out there.
I've been in the same position before in that I'm attracted to a man but it wasn't the best place to act for various reasons. I'm now good friends with them and we get on like a brother and a sister. In time it could develop into something else but I would very much let them lead on that. And no, I'm not hanging about waiting for him to confess his love. I am still dating and have connected with someone else.
And also at the same time. Believe it or not, considering whether to confess I'm attracted to someone who I've been chatting to online for a little while, but again, I think they might be in a relationship of a casual sort with someone else, so I just don't know.
I guess what I'm saying is act with your head, not your hearts and do what's right, particularly given that he's a teacher and that's a certain position so might limit options.