The process wasn't as hard as some people assume. You just need to be confident and not pissing your pants like so many people I saw. It was pleasant to see that they actually offer workshops on how to get through the interviews. My process was 2 first round interview followed by 3 second round interviews a week later. There are usually 4 second round interviews but there was a staffing shortage so we only had 3. First round with Engagement Managers. First 2 of the second round with Associate Principals. All these were the same format. About 30 minutes behavioural and 30 minutes a set case that my interviewer was reading. My last interview however was with a Principal and he just told me about a situation he was in where he had to talk to a board about a sensitive situation and we went through how I would handle it.