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McKinsey Case Structuring Prep Advice

Hi all,

I've been using PrepLounge drills and also am planning to use CaseCoach structuring drills to clearly understand how to build the framework. I've realized sometimes I struggle with making the framework exhaustive enough. Are there any recommendations on how else I can improve - for example specific case books/cases best for this etc? Focused only on McKinsey.

Also I have heard that the RocketBlocks structuring drills are not great - they do seem to be quite different compared to casebook structures. Would you recommend not to use their structure and brainstorming drills? Is CaseCoach good for McKinsey?

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Top answer
on Mar 19, 2025
Ex-BCG Principal & Senior Recruiter in Germany | 300+ real recruiting interviews at BCG | Free 15min intro call

Hi there, 

CaseCoach will work well for you. The most important part is that you practice this with peers or coaches so you can get dedicated feedback and simulate a real interview situation. 

Best, 
Sebastian

Will
Coach
on Mar 18, 2025
MBA at LBS - Joining McKinsey London - Unconventional Background - First Session 50% off!!

Hey!

You're on the right track with CaseCoach—it’s great for McKinsey-style structuring. A few ideas to improve framework depth:

  • Focus on first principles (e.g., breaking down problems into fundamental drivers).
  • Use CaseCoach drills and McKinsey-style cases (e.g., Wharton MBA Casebook and tbh most MBA case books) alongside PrepLounge McKinsey cases).
  • Get feedback on your structures—it’s the fastest way to improve. Either via a coach or through peers.

RocketBlocks structuring & brainstorming drills aren’t ideal for McKinsey (they lean more candidate-led), but they can still be useful for practicing the basics. Stick with CaseCoach for a structured, hypothesis-driven approach and make sure you get feedback!

Happy to talk through how I approached structuring for my McKinsey interviews. 

Hope this helps.

Will

Hagen
Coach
edited on Mar 20, 2025
#1 recommended coach | >95% success rate | 8+ years consulting, 8+ years coaching and 7+ years interviewing experience

Hi there,

I would be happy to share my thoughts on your question:

  • First of all, unfortunately, almost all resources are terrible for thoroughly understanding how to approach and structure a case study.
  • Moreover, I would advise you to consider working with an experienced coach like me on this. I developed the "Case Structuring Program" to help exactly such candidates like you who.

You can find more on this topic here: How to succeed in the final interview round.

If you would like a more detailed discussion on how to best prepare for your upcoming McKinsey pre-interview assessment and/or interviews, please don't hesitate to contact me directly.

Best,

Hagen

on Mar 20, 2025
Ex-McKinsey| Offical McKinsey Case Coach | +250 individual & group coaching sessions

Hi!

CaseCoach is enough to build up the robustness of your structures. Casecoach was my primary source for my McKinsey interview :)

There are 2 main components for the interviews:

  1. Case interviews 
    • Structuring: Make sure you have your structures down - to make the structures exhaustive what I did was I kept a notebook of all the different types of frameworks templates e.g P&L with costs decrease, market sizing  and as I went along doing different cases I’d filll out the templates with more examples. 
    • Case maths: Use the drills in Casecoach and make sure you focus on units billions/millions , division by fractions, multiplication by percents. I find most people make small mistakes across these areas. 
    • Communication: Make sure you convey the “so what”, that you lead the case with conviction, you make it easy for the interviewer to follow especially in the maths section. Communication is half the struggle.
  2. PEI interview. Have a look at the article to just understand what it is. https://www.preplounge.com/en/articles/mckinsey-pei
  • You should prepare atleast 2-3 interviews that cover Leadership, Entrepreneurship and Personal Impact
  • Follow the SMART story process
  • Choose stories that are true 

Very happy to have a 15min intro call to go through how I prepared for my interview and how I’ve coached others into McKinsey.

Florian
Coach
on Mar 20, 2025
1400 5-star reviews across platforms | 600+ offers | Highest-rated case book on Amazon | Uni lecturer in US, Asia, EU

Hi there,

Great question!

The time of cookie-cutter cases (business and non-business context) is long over.

The key for any case structure is to operationalize the goal, then use a first principles approach to identify the key areas to understand the problem/answer the client question in a MECE way.

The goal for McKinsey (or any other firm) is to deliver a broad answer (covers the problem well) and deep (sufficient concrete ideas for each top-level bucket to look into), ideally in a 3-level structured framework. The framework also needs to be insightful (relevant and tailored to the question at hand).

Teaching how to structure properly is not something that can be done in a forum post extensively. I'd suggest you work with a McKinsey coach or get my book (you can find it on Amazon) or structuring course (reach out for more info) where I break down how to structure any case, regardless of context or industry, in great detail and with many creative examples.

If you are interested to learn more about McKinsey interviews specifically, I have written these two articles here as well:

All the best and reach out if you need help!

Cheers,

Florian

Alessa
Coach
2 hrs ago
xMcKinsey & Company | xBCG | +200 individual & group coachings | feel free to schedule a 15 min intro call for free

Hey there 😊,

You’re asking all the right things—and it’s great that you’re already using multiple resources intentionally. Here’s a quick breakdown to help you sharpen your McKinsey-style structuring:

✅ Structuring for McKinsey: What Works

CaseCoach: Yes, very solid—especially the case walkthroughs and structure drills. Just make sure you don’t memorize templates blindly. Use them to understand how to be MECE + top-down
PrepLounge: Great for variety, but mix with interviewer-led practice to stay aligned with McK’s format
RocketBlocks: Useful only for building speed with structuring under time pressure, but don’t over-rely on their logic—some drills feel too “consulting-for-tech” in tone

💡 How to Improve Your Structuring

– Always start from the objective: “What does success look like?” → then work backwards
– Think in layers: high-level buckets first, then add sub-drivers (but only if you’d use them!)
– Practice brainstorming frameworks like “ways to grow”, “reasons for customer churn” etc. under a timer

Also, if you want, we can do a few rapid-fire structure-building sprints together—happy to coach you through your logic live 😊

Best,
Alessa 😇

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