They're aren't many things I feel so strongly about, but this issue is one of them. I am currently looking at schools for my daughter. I am a non religious person and my partner is a none practising Catholic, doesn't go to church at all anymore.
I personally think it's wrong on a moral level to exploit a church for 6 months or however long, just to get your child to a certain school. It's almost like, "Oh hi, yes thankyou, I've got what I needed, you'll never see me again!"
2 schools near me are both decent, 1 outstanding and 1 good (Ofsted ratings) interestingly enough, the NON Catholic school has the higher mark as of 2017.... just saying. Both schools are great in my view, religion aside. But I'd feel awful and wrong and like I was cheating or manipulating the system, just to get my girl to a certain school, and then waving bye bye to the church after, as I know for a fact, my partner and I have no intention of going to church afterwards.