As much as I would love to see what a school wrote on my application and see what recommendations had to say etc, I think the above proposal to make all of that information public is a rather ludicrous one. What a huge liability and breech of privacy. FERPA would never allow it, anyway.
As for yield, could someone explain why that’s valuable information to a candidate? Say you get into Harvard and Yale, one with 82% yield and the other with 70% yield, are you likely to choose Harvard just because more candidates gravitated toward the most irresistible brand name in US Colleges and thus made it look more desirable somehow? I don’t see why candidates would get use out of that metric in their decision process, though I agree it should be made public.