I went to a Christian Brothers Primary school and a grammar school run by priests. I am sending my own kids to non denominational, mixed schools.
I got a good education but it was restricted. First of all, more than anything else, there were no female students in my schools - I mean come on we have to live the rest of our lives with females at home and in work, why not in school?
Second the amount of **** religious studies I had to learn. I knew it was all bullshit, everyone knew it was bullshit - I was taking triple award GCSE Science in which some very intelligent teachers were completely disproving the Religious class I had to take straight after. I've a GCSE in feckin religious studies, what a complete waste of 3 periods a week.
Thirdly society doesn't need partitioned like this. It's not just a Catholic thing, at least not in the north of Ireland. The Presbyterians are at it too and there are some decidedly Unionist curriculums in some of the non religious Unionist schools (my Protestant missus and I were teenage sweethearts, I read her version of Irish history books - my kids won't be going to that school). Schools that consist mostly from any single community need to be disbanded or integrated - it's one of the single biggest reasons that society is divided.
My politics also stipulate this, the United Irishmen were secular and the true Republic was intended to be secular. The less influence the church has the better.