That's the best reason I've heard in favor of the school letting the child enroll. The question is, do you really think the two "parents" in question would really let the school try to teach the child that their behavior is wrong? If they're willing to cry afoul to the media over enrollment, do you think they would let it slide if a teacher taught about the passages in the Bible that call homosexuality a sin?
Which is actually the
best argument
against enrolling the children.
Because when you enroll the children into the school you also enroll the parents into the school, so to speak - even in the most uptight environment, parents are expected to be able to come in and speak to the staff, participate in parents' meetings, etc. You're going to be letting a couple that clearly doesn't share your values have a degree of influence - as parents and clients - into an environment which they clearly loathe and which holds their entire identity as evil.
This, also, incidentally, why there's no way in the world applying to the school is a good idea for the parents either.
A lot of modern LGBT individuals (myself excluded, and I am sure there are many who don't) - construct their entire identity around their sexual orientation. They're not people who happen to sometimes do it with people of their own sex. They
are homosexuals, lesbians, or whatever. They have (or expect themselves to have) - differing tastes in movies, music, clothing etc. from straight people in the same way that Greeks have differing tastes in food and music from Italians.
To give an example as to how far this extends, I have once ended up on the grounds of a 'Gay movie festival'.
There exists, it turns out, an entire world of 'gay films' (not gay porn, but serious cinematography meant to aim for the homosexual's sense of style and taste). It was - I gathered from the posters - sort of like artsy-shmancy 'modern cinema', but the point is that a separate style of cinema is perceived to exist. The entire grounds where the festival was held were redesigned to fit, etc. etc.
This is to point to the essence of why this whole thing is a bad idea:
The traditionalist pastor or rabbi feels he's condemning a sin: not unlike condemning an act of adultery or fornication.
The identity-homosexual feels that the pastor is condemning his entire existence as evil. So
from the point of view of a homosexual, male or female, sending a child to such an environment would be far worse then it would be for a sinner to send his child to church - after all, we all sin.
From the point of view of a homosexual or lesbian, the school's belief hold the couple's entire existence as evil.
As such, what the couple has done here is majestically callous - not so much towards the school but towards their own child first and foremost.