ILO
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Exam Structure

Contest Structure

The International Logic Olympiad (ILO) consists of several phases, starting with preliminary online rounds and culminating in an in-person final at Stanford University. All course material used throughout each stage of the ILO can be found here Curriculum↗.

Preliminary Rounds (Online)

  • Round 1 (March 9th): Propositional Logic (Curriculum Chapters 1 - 5)
  • Round 2 (March 30th): Relational Logic (Curriculum Chapters 7 - 10)
  • Round 3 (April 27th): Functional Logic (Curriculum Chapters 11 - 15)

Final Round (In-Person at Stanford University)

  • The final round will be three days long and will consist of high-level challenges in Propositional, Relational, and Functional Logic, designed to test participants' advanced understanding and ability to apply logic under rigorous conditions. It will also include creative, unstructured puzzles that encourage critical thinking and the application of broad logic knowledge. The event will conclude with the awarding of prizes to top performers, guest presentations by logic experts on advanced topics, and a campus tour of Stanford University.

Grading

  • There is no minimum score requirement for each exam round, the finalists will be chosen based on relative performance compared to all exam takers.
  • ID Verification is not mandatory for participation in the preliminary rounds. It will be necessary after the Round 3 exam is complete for those who are invited to the final round. We will provide more guidance on this on our website as well as via email.

Taking Online Exams

  • The exam window opens at 09:00 AM PDT on the exam day and closes at 09:00 AM PDT on the following day.
  • You MUST begin your exam before 07:45 AM PDT on the closing day.
  • You will have 75 minutes to complete the exam.
  • All participants must submit their answers individually regardless of team status.
  • Failure to comply may result in a '0' for that round.
  • If you are experiencing technical issues during exam period, you MUST PROVIDE screenshots and email it to us to aid in resolving the issue (Issues must be reported during exam hours).
  • Please take the Practice Test↗ in advance to familiarize yourself with the test portal and prepare for the exam.

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