>*if* exposure to gender ideology saves some lives, is it worth it if it negatively affects others?
Why ask that question if there is no reason to suppose it negatively affects others?
>So I'll ask again for the third time: is there evidence that teaching gender identity in schools reduces suicides and self harm?
Well, considering there is ample evidence that transitioning does*, and that children have to be aware of the possibility in order to make use of it, and that I can't even think of a reason why being aware of it should be harmful to anyone who does not suffer from gender dysphoria, I'd say it's rather self-evident
*source: every study on the topic