I recently had some experience with a business course taught at the relatively prestigious business school in Barcelona, IESE. It was a couple day course on negotiation and was quite good until the last day. On the last day, a new teacher walks in and more or less out of the blue starts spouting off about how being gay was could be cured and the sanctity of marriage, etc. I suppose this was the mandatory Opus Dei service announcement. Everyone was looking at each other with a WTF look, but everyone was too chicken to say anything.
I think Opus Dei are kind of like the Mormons in the US. Cliquish, with aggressive missionaries, conservative, and very successful in business.
Something I find interesting about Opus is that they have a class of people that are called “Cooperators”, who don’t even have to be Christian, but provide various kinds of assistance to Opus. I assume there’s some kind of mutual back-scratching involved.
Financial Times had a good story about the school last year.
Update: I had some comments from a reader that IESE doesn't proselytize in their MBA program. From what I've heard as well, this is generally true. I'm not sure what was going on in this particular instance.