Catholics are supposed to send their children to a catholic school (still). If there isn't one then you can't. In some places, there isn't one.
The only people who use 'Roman' are people who are sniffy about catholics since its not what we call ourselves, it was originally a made up name by protestants who wanted to pretend that they are the true 'catholic church' and we are some offshoot instead of the other way round. The only people who use it these days are people with an axe to grind, typically these days in an attempt the stress the 'foreign otherness' of catholics as a way to advance the cause of abolishing our schools. It's a very loaded term indeed. As I have no doubt you knew.
CofE schools are sometimes a back door for selection since they have property based entrance criteria. Catholic schools are not since they don't.
Curlew I've explained why it was. The fact that you don't accept that demonstrates that you meant to use that term and knew what you were doing. The usual form when people use loaded terms unintentionally is to apologise. Even stupid people.