I guess it also comes down to whether a school is willing to force other parents to have conversations with their grade school children about matters which they had not planned to discuss until some years later.
Kid: “Jared says he has two dads, but I told him that can’t be. Is that even possible, mom?”
Mom: “Well, not really. I mean, it takes a mom and a dad to have a child.”
Kid: “So, how can he have two dads? What does that even mean? Where is his mom?”
So, depending on how detailed she wishes to get, this mom is forced to explain, because of circumstances beyond her control, the facts of procreation, of sex, of same sex ‘marriage.’ I would think it could get pretty uncomfortable. And she’ll have to be very careful to avoid normalizing the same sex fathers or condemning them and causing her child to do so. It will be a tightrope, brought on by others.
And if causes the child to come to the conclusion that, hmm, same sex marriage must be no big deal, because a kid in my school has two fathers, well, that is the whole meaning behind the Catholic concept of scandal. It’s not being shocked. It’s being led to a wrong idea or a wrong decision.
Heck, when I was in elementary school, I couldn’t even wrap my mind around the idea of “half-brothers.” It was more mysterious to me than the Trinity.