Yale itself published an expose in 2014 about Yale’s terrible reputation:

The evidence establishing Yale’s involvement in the slave trade is clear and compelling.

There were many interesting points made in an excellent write-up, yet the most interesting one for me was this:

Historians have long pointed out that Yale (the University) is deeply implicated in the institution of slavery. Many of its prominent buildings are named after slaveholders or slavery apologists. It housed so many southern students that it briefly seceded from the Union at the start of the Civil War.

Yale seceded? Amazing detail.