@sllemon: I tried to find out myself - but have there actually been multi-year stats (let’s say over ten years) by college, that do show that certain “some” as a group actually do have noticeably higher rates than less elite schools?
I realize that any given year/semester one or the other school will have a “cluster” that will create an outlier for that one year that will then make the news (specially for brand name schools that might be considered even more news-worthy), which is why looking at long-term trends is crucial to qualify that perception.