I applied online through my schools job and internship portal. I was then contacted by Deloitte about coming in to on campus first round interviews at the career center. The first round was only one thirty minute interview. About two days later I was contacted via email to set up a second round interview. The second round was an in house interview at the office. It consisted of three 30-minute interviews (one with a partner, two with senior managers). The interviews were prefaced by a thirty minute introduction to Deloitte by the campus recruiter and then a thirty minute panel with partners. The questions were all behavioral and the interviews were very conversational. It seems as though if you make it to the first round interview then you are qualified for the job and from then on they just want to make sure you are a good fit for the culture.