Training · CO-2 · Lesson 06 of 06
Practice cases
The rule
Volume of live practice is the strongest predictor of performance. Reading about cases builds recognition; only speaking them builds fluency.
How to practise
Practise with partners who give honest feedback. Alternate roles: giving cases teaches you what interviewers look for.
Sample case: market entry
A coffee chain wants to enter a new country. Assess market size and growth, competition, the client's capabilities, and economics.
- Stores in year 3
- 100
- Revenue per store
- $1.2m
- Store margin
- 15%
- Annual profit
- $18m
- Investment
- $80m
- Payback
- ≈ 4.5 years
Sample case: profitability
A manufacturer's profits fell 30%. Diagnose revenue versus costs, find the segment driving decline and recommend fixes.
Reviewing your performance
After each case, note errors in structure, maths, insights and synthesis. Track improvement across categories.
- ·Did my structure fit the problem?
- ·Were my calculations correct and fast?
- ·Did I synthesise after each finding?
- ·Was my recommendation clear?
Final preparation
In the week before interviews, focus on full cases under time pressure, fit stories and rest. Confidence and clarity matter as much as knowledge.
Hold onto this
- ·Aim for two live cases a week with someone who will interrupt you.
- ·Record yourself and cut the filler and the restarts.
- ·Keep a log of the structures you could not build and go back to them.
Progress saved on this device
Education, not financial advice. Figures may be simplified for illustration.