30 minute 1st Round Interview on Campus with an alumnus of my university. Was supposed to be largely behavioral, but once I started asking questions about the structured product he works with, it got more technical.
2nd Round- 3 interviews (2 behavioral, 1 case study) in office
The 1st behavioral was with someone who had been at the comapny for 3 months, so that was an interesting perspective. He had a highly varied background before joining as a consultant. All behavioral and questions about myself/resume.
2nd Interview was a case study. It was formatted in a weird way. They gave us the case (3 pages, and no data whatsoever, just a story), and we read it, took notes and then roleplayed as consultant (me) and client (EY professional). Perhaps the case was weird, the interviewer was weird, or I wasn't getting it, but based on interviewer reactions and other student testimonials, it is not hard to do well
3rd Interview- Almost all fit questions about becoming a consultant. Much more consulting oriented than the finance focus that campus recruiters had pitched to us. Hardest interview, largely because I didn't know what to expect and interviewer was keen to dig at that.