I interviewed for a summer intern position with the ITRA group. Before the interview, there was an online writing assessment which basically tested applicants logical thinking and reasoning. I didn't finish the essay, but I still got into the first-round interview.
The first-round interview was just a typical on-campus interview, in which most questions are behavioral questions. However, there were still some "surprises".
After passing the first-round, EY invited the candidates for an office interview, in which a candidate would have interviews with three managers. One of the interview is a case interview, for which a candidate would be given 15 minutes to read a 3 to 4-page case, and then discussed the case with the interviewer. The other two interviews are mainly about the behavioral questions.