You see, I make all sorts of assumptions about things I really don't have the first idea about. I try to hold my tongue (and pen, and fingers) but sometimes I end up making a statement about something based entirely on prejudice.
Now, private education in France is something I really don't have the first idea about; and private education in France in schools run by the SSPX, Archbishop Lefebvre's lot, is a book even more firmly closed. But if you'd asked about sport in such schools, I would have opined that it wouldn't be a particularly high priority, and that it would have been based on field sports. Why? Ignorance! Complete ignorance.
Just look at the advert for a rugby competition which I found here!