Drills isolate individual case-interview skills so you can improve faster than by relying only on full cases. Use short, repeated exercises to target specific weaknesses before reintegrating them into complete interviews.
Structure Drills
Exercise: Read a case prompt and spend two to three minutes building a tailored issue tree. Focus on relevance, MECE logic, and prioritization.
Calculation Drills
Exercise: Practice percentages, margins, growth rates, breakeven, weighted averages, market share, and capacity calculations.
Goal: State the equation first, calculate accurately, track units, and interpret the result.
Exhibit Drills
Exercise: Review a chart or table for one minute, then identify the headline, supporting evidence, business implication, and next question.
Brainstorming Drills
Exercise: Generate ideas for questions such as reducing costs, increasing revenue, improving retention, or entering a market.
Goal: Create categories first, then develop specific ideas within each category.
Hypothesis Drills
Exercise: Read a short business problem and state an initial hypothesis, the evidence needed to test it, and what would disprove it.
Synthesis Drills
Exercise: After reviewing several facts or calculations, summarize the most important conclusion in two or three sentences.
Goal: Explain both what the analysis shows and why it matters.
Recommendation Drills
Exercise: Deliver a 30- to 60-second recommendation using four elements:
- Answer: State the recommendation first.
- Evidence: Give the two or three strongest supporting points.
- Risks: Identify the main uncertainty or downside.
- Next steps: Explain what should happen next.
How to Use the Drill Library
Choose drills based on weaknesses identified in practice cases. Repeat the same skill until performance improves, then test it again inside a full case.
Final principle: Full cases test many skills at once; drills improve one skill at a time. Use both deliberately.
