There was an on-campus interview where they had two-thirty minute sessions. The first was a simple behavioral interview where they asked about my resume and how I perform in a team setting. The second was a case interview where they gave me a packet of 4 charts and graphs, each corresponding to a question.
Then they flew me to their HQ for a 5.5 hour interview. It consisted of a project demonstration, analytic, behavioral, and case interview. The case interview was the same format as the first interview but lengthier and the proctor literally left the room for 30 minutes for me to solve it. Then he came back and I explained it to him. The analytic was much like a regular case interview, but very vague and not detailed. The behavioral was the same with the exception of the interviewer analyzed my entire college transcript and highlighted all the flaws of it.