I completed McKinsey's test in which you have to score above 50% and passed it. The test seemed to be composed of pretty much very difficult questions with doses of added ambiguity, I usually have a solid gut feeling when it comes to these tests but had literally no idea how I did here. The next step was the interview phase during which I completed three interviews in one day. Each consisted of a background chat, the most interesting of which was with a former clinical psychology PhD - only later did I realize I was being evaluated in ways beyond my imaginations here:) The cases themselves were not as difficult as with BCG where you are given a very brief intro to the problem and left to venture wherever you deem fit. McK consultants guide you through the process to places where they want you to go and explore. I had one life situation based case (guess with whom), a simple banking/interest case with one of the partners and an operations/process case with charts handed to me with a more junior consultant. I was told to re-apply without getting the offer due to lack of maturity, which I later realized, despite being disappointed, was fair. The whole process was fine but they do very much keep their distance in communication before and after which I guess is natural given the amount of demand there is.