The first round interview was a 1:1 phone interview. Second round was a 1:1 skype interview. Then they send you "HOW" a book by LRN's CEO which you read before coming in for the third round which is a series of 1:1 interviews with analysts, senior analysts, and other people on the hiring board. This round also includes a skills assessment of a general math/science question to see how you think through simple logic as well as a business case interview. Then, the next round is a case presentation in which you have 5 hours to complete a case analysis and present your answer in 5 slides or so. If they like that, then you write short essays based on HOW and your personal fit with the company and your values etc. The final round interview is a series of conversations with the President of GreenOrder and the CEO of LRN. Be ready to discuss your weaknesses, failures, criticisms, regrets etc almost once per person who interviews you and don't lie or give a hidden response. The company values honesty.