Case interviews are standard at consulting firms and increasingly common elsewhere. Here's how to structure your preparation.
Case interviews - where you're given a business problem and asked to work through it out loud - are standard practice at management consulting firms and increasingly used by tech companies, investment banks, and strategy-focused roles elsewhere.
They test structured thinking, quantitative reasoning, communication under pressure, and the ability to organize your thoughts on the fly. They're learnable with deliberate practice.
Understanding what they're testing
Interviewers are not primarily looking for the 'right' answer. They're evaluating your process: Can you break a complex problem into manageable parts? Do you ask clarifying questions before charging ahead? Can you make reasonable assumptions and state them explicitly? Can you synthesize your analysis into a clear recommendation?
The output matters, but the process matters more. A candidate who works through a case methodically, shows clear reasoning, and arrives at a reasonable (even if not perfect) answer will outperform a candidate who jumps to an answer without showing their work.
Framework basics
Case frameworks are structures for organizing your analysis. The most common: profitability frameworks (revenue minus cost), market sizing (break a large number into estimable components), market entry frameworks (market attractiveness, competitive dynamics, go-to-market strategy), and M&A frameworks (synergy, integration, valuation).
Learn the frameworks, but don't over-rely on them. Mechanically running through a pre-memorized framework on every case is detectable and often unhelpful. The frameworks are scaffolding - adapt them to the specific problem in front of you.
How to practice
Practice out loud with a partner or a coach. Reading case solutions is far less effective than working through cases with someone giving you feedback in real time. If you're serious about a consulting role, you need at least 20-30 full practice cases before your interview.
Victor Cheng's 'Case Interview Secrets,' CaseCoach, and PrepLounge are well-regarded resources. Find a practice partner who's also preparing - you'll both benefit from giving and receiving feedback.
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