Why is it tough?
People having extramarital affairs probably aren’t blatantly proclaiming their sin, they are probably going to great lengths to hide it.
Homosexuality is a sin, and the “parents”, through their “marriage” are blatantly proclaiming their sin, they’re probably PROUD of it (pun intended).
Again, ALL have sinned and fall short of the Glory of God. These
“parents” want the Christian school to acknowledge and embrace their sin. That poor little girl.
What if they’re having an extramarital affair and not hiding it?
Tough call.