Format accuracy
Question types, exhibit layouts, timing and interface behavior follow what the firms and test providers publish and what candidates describe. Where sources disagree, the guide says so.
Audit logCounted
How we check McKinsey, BCG and Bain test practice
Where our format details come from, how every scenario is checked before it goes live, and exactly what we count. Written so you can judge the practice before you use it.
- Answers checked end to end
- Two-source rule
- No invented proof
1. The firm's own pages
Careers and assessment pages from McKinsey, BCG, Bain
2. The test vendor's documentation
Sova, TestGorilla and similar candidate hubs
3. Candidate reports
Used only when 2+ independent accounts agree
Estimates (pass rates, cut-offs)
Named, linked, never presented as fact
The problem with most prep
Practice is only useful if it matches the test
Firms publish little about their online tests, and much of what circulates online is one person's memory of one sitting. Practice built on a wrong detail trains the wrong habit, such as expecting to go back to a question you cannot revisit. So the rules below are about what we are allowed to rely on.
Exhibit 1
How a scenario gets onto DrillCase. Each branch is a gate: content that fails a check goes back a step.
ScenarioReady to publish?
- 01Public format sourcesFirm careers pages, test-vendor docs, candidate accounts
- 02Cross-checkA detail needs 2+ independent sources
- 03Solve and time itAnswers and timing checked end to end
- 04Publish and correctReports from users trigger a re-check
The four steps in detail
Gather public format information
We start from what is documented in public: firm careers pages, test-provider descriptions, and candidates' own accounts of the question types, exhibits, timing and interface they saw.
Cross-check the details
A format detail goes into a scenario only when more than one independent source describes it the same way. Single-source details are left out or flagged as uncertain in our guides.
Check answers and timing
Each scenario is worked end to end to confirm the answers, the calculations and that it fits the time limit it claims.
Publish, then listen
Scenarios go live. When a user reports that something differs from their real assessment, we check it against other sources and fix or retire the scenario.
What is on DrillCase, exactly
These are the only numbers the rest of the site may quote. They were counted from the live database on 2026-09-23. Marketing copy rounds them down (for example 450+), never up.
DrillCase · content audit · source: live database
- COUNT
bcg.cases- BCG Casey-style chatbot cases
- 29
275 questions
- COUNT
bain.questions- Bain-style aptitude questions
- 476
23 timed sets, plus 3 mock tests built from those pools
- COUNT
mckinsey.scenarios- McKinsey Solve-style scenarios
- 21
Current games: Redrock 10 · Sustainable Futures Lab 10 · Sea Wolf 1 (unlimited generated runs). Not counted: 2 Ecosystem Creation archive games (reported phased out of most invitations)
- COUNT
caseLibrary.cases- Free case library
- 63
full case studies
- COUNT
drills.questions- Drill questions
- 582
mental math 500 · charts 50 · market sizing 32
- COUNT
glossary.terms- Glossary terms
- 29
- COUNT
prices- Prices, one-time
- $20–$250
7 lines · rounded down in copy, never up
Our standards
Four rules every scenario is held to
Honest numbers
Every count on the site comes from one facts file, recounted from the live database. Labels round down, so "450+" never means fewer than 450.
No invented proof
No pass rates, ratings or user counts we cannot verify. No customer reviews are shown until each can be proven: the order it came from, the date its writer gave permission, and their consent to the name shown.
Corrections
When a candidate reports a format change, we check it and update or retire the affected scenarios.
Keeping content current
Tests change. We track the changes.
Consulting firms change their assessments. BCG has modified Casey since it was introduced, Bain uses more than one test provider, and McKinsey changes which games a Solve invitation includes.
When a change is confirmed by more than one source, we update or replace the affected scenarios and record the change in the relevant guide. Our McKinsey Solve guide keeps a dated changelog, and the BCG Casey guide and Bain online test guide list their sources.
A plan to your test date, from the people who track the format
- McKinseyMcKinsey Solve guide: format facts checked
- BCGBCG Casey guide: format facts checked
- BainBain online test guide: format facts checked
- McKinseySolve invitation lengths checked against public sources
- AllEvery count on the site recounted from the database
Format facts in the plan emails link to our guides, which show the date each was last checked.
Questions about how we work
- Q1How close is the practice to the real test?
- The format: the kind of screen, the question types, the exhibits, the timer and whether you can go back. The firms don't publish their questions or their scoring model, so no practice can match those. The free demo case is the quickest way to judge the fit for yourself.
- Q2How are the counts on the site produced?
- From a single facts file recounted against the live database, most recently on 2026-09-23. Copy rounds down, and the exact figures are listed on this page.
- Q3Why don't you publish a pass rate?
- Because we do not have independent data on how DrillCase users score on the real tests. The firms do not publish pass marks either, so any figure would be an estimate. Our guides name the source of every estimate they quote.
- Q4How do I report something that looks wrong?
- Email support@drillcase.com with the page or scenario and what you saw on your test. We review every report and correct confirmed errors.
Audited ·
Does something differ from your real test?
Tell us what you saw and on which page or scenario. We check every report against other sources and fix or retire what is wrong.
Report an error: support@drillcase.com
DrillCase is an independent practice provider. It is not affiliated with, endorsed by or sponsored by McKinsey & Company, Boston Consulting Group or Bain & Company.