As one of the folks who worked on this — this graphic has already been flagged twice today, and probably will continue to be. So please take an extra minute to read closely and consider carefully before commenting.

To head off some FAQs at the pass:

* The multiracial and Native American categories are calculated, but only displayed when they go above 5% in any year for a given school. Multiracial was only introduced as a category in 2008 — you'll notice some big jumps because of this (U. Hawaii @ Manoa)

* International students — which often make up sizable component of undergraduate diversity in Ivy League schools — are excluded from these. It's U.S. residents only.

* You'll notice some gaps in the 1980's before the data starts being reported consistently in 1990's by the Department of Education.