First a mathematical test. Then 2 rounds of interviews with 2 interviews in each one. They were standard consulting cases. The first 2 were definitely easier than the second 2. Nevertheless, they aren't too hard if one has prepared with Case in Point or some other material.
Interview questions [1]
Question 1
Chance of scoring at least one penalty for a player who has an 80% of scoring each penalty. He will shoot 2 penalties.
I applied through college or university. The process took 6 weeks. I interviewed at Boston Consulting Group (Seattle, WA) in Jul 2022
Interview
The interview process used to be a bit more complicated, but as of 2022 BCG has two rounds (I believe) - a preliminary round with online case and personal interview, then another with in person cases and Partner interviews
Interview questions [1]
Question 1
They care lots about your problem solving abilities. For example, "name a time you used a creative solution to solve a problem"
I applied online. I interviewed at Boston Consulting Group
Interview
Two round case interview, it was good and ok, the whole process was smooth. The interview experience was good ! Be prepare for the case, practice more before real interview.