Not exactly what you're looking for, but this might be potentially useful information.
It looks like Cornell has a 39% 6-year completion rate (with a median time-to-degree of 6 years), where Yale has a 25% 6-year completion rate (with a median time-to-degree of 5.9 years). (Disclaimer: These numbers sound a bit squiffy to me, but perhaps the fact that the median is 5.9 years and the 6-year completion rate is only 25% indicates dropout? And likewise for Cornell's 39% 6-year with a median of 6 years to degree?)
You can compare these numbers to somewhere like Berkeley 36% 6-year (6.3 median T2D) or UIUC 27% (6.3 yrs), where it seems that –- at least Cornell -- does a much better job. For context, Princeton has the best numbers I've found in this regard, with 72% 6-year completion rate and a 5.2 yr median time-to-degree.
Just one more number to throw out there: you can also look at the number of people with a job at graduation. Yale reports 81% of graduates having signed a job contract somewhere by graduation (roughly an 80:20 split between academia/industry), while Cornell has 79% of graduates in contracts at graduation (about 3/4 in academia, 2% in gov't jobs, the rest in industry). These numbers are quite good, on par with Berkeley, Stanford, and MIT.
(click on any given program to go to their page, then click on the "Outcomes" tab)
Disclaimer: This data is at least as old as 2010, so it might disfavor somewhere like UCSB that has risen to top-tier level in recent years, but I think it gives a decent picture, especially of places like Yale and Cornell that are more-or-less known quantities.