Rehearse the McKinsey interview, prompt by prompt
McKinsey runs interviewer-led cases and the Personal Experience Interview. Both reward disciplined, top-down structure and a crisp synthesis. Here's how to walk in ready for both.
Two interviews, one standard of rigor
A McKinsey round pairs a tightly directed case with a deep dive into your own experience. Each tests a different muscle.
Interviewer-led cases
The interviewer steers. You won't drive the agenda — you'll answer a sequence of pointed prompts, each one testing whether your structure holds up under direction.
The PEI
The Personal Experience Interview probes one story in depth — leadership, drive, or personal impact — pushing past the headline into your specific actions and the friction you faced.
Structure over speed
MECE issue trees, a stated hypothesis, and a clean 'so what' on every exhibit matter more than racing to a number. McKinsey grades how you think out loud.
Should our client launch in Brazil?
“A North American premium pet-food brand is considering entering Brazil. They've asked us whether to launch, and if so, how. Where would you start?”
What the interviewer is testing
Can you build a MECE structure fast, commit to a hypothesis, and stay top-down while they steer you between branches?
How a strong candidate opens
“I'd structure this in three parts: the market opportunity, our client's ability to win, and the economics of entry. My hypothesis is that Brazil is attractive but only worth entering through a local partner — premium pet food is growing there, but distribution and import duties are the real hurdle. I'd start by sizing the addressable market to confirm it clears the client's threshold, then test the 'how' second. Shall I begin with market size?”
Why it works
Three MECE buckets, a stated hypothesis, and a prioritized first move — then it hands the wheel back to the interviewer.
Built for the McKinsey bar
Rehearsa runs interviewer-led cases that interrupt, redirect, and probe exactly the way a McKinsey EM will.
- Drill MECE issue trees until your first structure lands in under 90 seconds, fully labeled and genuinely non-overlapping.
- Practice leading with a hypothesis — 'I believe the margin loss sits in fixed cost, and here's how I'd test it' — instead of listing every branch.
- Rehearse the 'so what' on each exhibit: read the chart, name the insight, and tie it back to the client's question in one breath.
- Build three PEI stories in clean situation–action–result form, each with a quantified outcome you can defend under follow-up.
- Get comfortable being interrupted and redirected mid-thought without losing your thread or your composure.
Your stories, stress-tested
The PEI is half the round and the half most candidates under-rehearse. Rehearsa pressure-tests each story the way a McKinsey interviewer does — “What did you do? What would you change? Who pushed back?” — until your answer is specific, owned, and quantified.
3
PEI stories drilled
90s
to first structure
120+
interviewer-led cases
100%
probed like the real round
Stop practicing. Start rehearsing.
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