Community-reported practice for the sustainability-themed Solve module that candidates describe on 85-minute invites: about 13 questions in 20 minutes — one priority ranking, then roughly 12 scenario decisions where earlier answers shape the scenarios you see later. Format details come from candidate reports, not McKinsey; scoring here is Casestar's own practice model.
A developing case, not a quiz: You lead a sustainability program under deadline pressure. Each decision changes the situation — two of the mid-game scenarios depend directly on what you chose earlier, and decisions are final once confirmed.
No math: It measures prioritization under conflicting demands, decisions under uncertainty, working with messy information, balancing trade-offs, and stakeholder effectiveness.
Consistency matters: Candidate reports suggest the real module tracks how consistently you weigh trade-offs across decisions. The review breaks that down explicitly.
One global timer: 20 minutes for the ranking and all decisions. Pace yourself — about 90 seconds per decision.
Source caveat:Sustainable Future Lab is known only from 2026 candidate reports; McKinsey's public pages do not confirm it as a named module. The missions here are original Casestar scenarios built to the community-reported format — nothing is copied from the real assessment.
Scoring (Casestar model): Ranking quality, per-dimension decision quality, and consistency of trade-off weighing, blended to 100. McKinsey has never published how the real module is scored, so treat every number as directional practice feedback.
Tip: There is rarely a perfect option. Strong candidates protect the critical path, buy information cheaply, and weigh the same trade-offs the same way every time.