If you want to enter the business school, you’ll have to take the required prerequisite courses that can be found here:
http://kelley.iu.edu/Ugrad/Admissions/CurrentIU/page39067.html
You need to earn a B or higher in each individual class (prerequisite and non prerequisite) for guaranteed admission. (B- does not satisfy this) If you get anything lower than a B, then your application goes in the “maybe” pile and it’s up to the admission committee to decide. Some of the classes that are required for admission to Kelley have a C+ to B- average so be warned.
It’s possible for someone with a 3.2 GPA and all B’s or higher to get into Kelley and someone with a 3.4 GPA and 2 grades less than a B to be denied.