I think some quantitative measures can be used for undergrad teaching, one is the quality of faculty who teach the classes and the other the class size. Here is the USNWR class size ranking:
https://www.usnews.com/education/best-colleges/the-short-list-college/articles/2017-10-17/10-national-universities-where-classes-are-small
If you factor in reputation Yale, Columbia, Chicago and NU come on top.