Tag: Ieo Preparation
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IEO Externalities: Comparing a Tax, a Subsidy and a Quantity Limit
A focused guide for IEO participants on distinguishing between Pigouvian taxes, subsidies, and quantity limits when addressing externalities.
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IEO Business Case Unit Economics: Testing Whether Growth Improves the Business
Work through two teaching illustrations to learn when growth improves unit economics and when common shortcuts fail. Includes a diagnostic table and targeted practice sequence for case round preparation.
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IEO Economics Graphs: Separating a Curve Shift From Movement Along It
A focused guide for IEO candidates on distinguishing curve shifts from movements along the curve, featuring worked hypothetical examples and diagnostic tools.
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IEO Preparation for STEM Students: Starting Without School Economics
STEM students can transfer quantitative strengths into IEO preparation by diagnosing economic reasoning gaps, connecting concepts to real scenarios, and choosing targeted support rather than restarting from scratch.
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IEO Past Papers: How to Build Practice When Official Materials Are Scarce
Discover how to construct effective IEO practice sessions using syllabus maps and sample questions when full past paper archives are limited.
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IEO Finance Beyond the Basics (2026-27): Bond Prices, Credit Spreads, CAPM and Fund Fees, Worked Through
Four finance blocks worth drilling for the IEO: bond pricing, credit spreads, CAPM with diversification, and fund fees, each worked through with numbers and its trap.
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The Maths You Actually Need for the IEO: Eight Calculation Families and the Five Errors That Cost Most Marks
Not competition mathematics: eight families of applied arithmetic executed cleanly under time pressure - plus the five slips that quietly destroy correct reasoning.
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Your Real Odds at Each IEO Stage: The Hard Gate Is the Team Seat, Not the Medal
At the 2025 final, 133 medals were shared among 258 competitors. But those seats were split across 52 countries at up to five each. The real filter sits upstream.
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The IEO’s Hidden Barrier Is the English – and It Is Not the Vocabulary You Think
The English that costs IEO marks is not hard words. It is ordinary-looking phrases with exact technical meanings. Three examples from 2026, and a method for building the habit.