I would imagine that overall university rankings in USNWR are what the OP’s impression is based on because that’s what most people are familiar with.
2017 Rankings (USNWR)
University of Maryland–College Park is ranked #60 in National Universities, Indiana University–Bloomington is ranked #86 in National Universities.
HOWEVER, for business school in specific, per Bloomberg rankings, Kelley knocks Smith out of the park, with Kelley at #4 and Smith at #50.
http://www.bloomberg.com/features/2016-best-undergrad-business-schools/