I’ve now read the article. I admit I have an uneasy feeling when I read that it is a evangelical school. In the text is made clear that the pupils come from different backgrounds, but I think school and religion should be clearly divided. I do not get the point, why religion is still a subject in our schools.
The defenders of the school said that the criticism of the TV program was exaggerated, but I know members of the church that is close to the school and I feel uncomfortable with both (church and school).
Regarding to the methods I think this is great for some kind of pupils, but I guess that this way of schooling is not the best for all pupils.
We are very much used to faith schools in England and in general they provide a solid education free. I would shy away from radical schools, though!
Religion is a choice and I believe we ought not to restrict other people’s choices unless they impinge on fundamental human rights. A church school in itself cannot be bad. It is what we make of it.
Your link is not working, but I shall look for the article on Wikepedia in a second.
N.B. I am an agnostic of sorts, but one of my children attended a Catholic primary school and a Church of England grammar school. The other one refused my proposal to try to get him into the Jewish Free School in London at the time. It had an excellent reputation in those years. Nor did he want to follow his mates to the local Catholic grammar school. He went to something called a community college - 54 languages spoken by the students of that establishment. He did do well there.