What is your opinion of Boston University?

[Corbett]

BU is the biggest private university in the US.

BU is certainly one of the biggest. It may not be #1 in this category though.

Founded in 1831, New York University is the largest private university in the United States.

https://www.nyu.edu/about/news-publications/nyu-at-a-glance.html

In fact, BU may not even be #2 anymore; the Provo campus of Brigham Young University may be larger:

Total daytime students: 33,363

https://news.byu.edu/about