It’s full of useful statistics on enrolments over time and surveys the literature and arguments surrounding religious schools, many of which have also been discussed over the years at this blog (I was originally going to be a co-author of this one, but could never make the time).
It finds the evidence against religious schools on sectarianism, intolerance etc to be lacking. This is my reading of the Australian evidence too.
However, while private schools definitely out-perform non-selective government schools on academic performance even after controlling for family characteristics, we can’t yet confidently make such a claim on the religious/values questions that influence some parents in sending their kids to religious schools.
We are not even sure whether religious schools make their students more religious in the long term – the limited and dated evidence suggests not, after controlling for the fact that religious families are more likely to send their kids to religious schools. I am one of the many atheist products of Christian schooling (not that the school influenced this either way).