International Logic Olympiad 2024

Explore the official platform for the International Logic Olympiad (ILO) 2024, a global event celebrating logic and problem-solving.











What is the ILO?

Offering high school students worldwide a chance to showcase excellence in logic and problem-solving, this contest is designed by the Stanford Logic Group, with aims to internationalize logic education and culminates in an on-campus final round at Stanford University.

Join the global celebration of logic and problem-solving at ILO2024, this prestigious contest for high school students worldwide aims to expand logic education internationally, while fostering a vibrant global community of logical thinkers.

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Why ILO?

Broad Academic and Professional Benefits

Particiation in the International Logic Olympiad (ILO) offers students a diverse range of benefits applicable across various academic majors and professional fields - including Mathematics, Computer Science, Philosophy, Law, Engineering, Medicine, Finance, and Data Science.

Academic Rigor and Prestige

The ILO ensures a high-quality curriculum (test questions and materials prepared by industry professionals), delivered by esteemed professors with expertise in logic.

Development of Crucial Life Skills

The ILO focuses on cultivating essential life skills such as decision-making and effective communication, which transcend academic boundaries and are vital for success in professional environments, enhancing participants’ social adeptness.

International Exposure and Networking Opportunities

Participation in the ILO provides students with international exposure, allowing them to represent their schools on a global stage and interact with industry professionals. The opportunity to engage in team-based competitions and attend the in-person final round at Stanford University further enhances practical applicability and networking prospects.


Registration Guide

Step 1: Create an account

  • Members between grades 8 - 12
  • Create an account and complete the email verification process
  • *This does not register you into participating in the competition

    *Users must verify their email to be able to register

Step 2: Team (or Individual) Registration

  • For team: Gather a team of 2 to 4 members. Discuss and designate a team leader. Collect all members' names and email addresses used for sign up. One member (preferably team leader) will register their whole team using the form.
  • For individual: Individuals can participate in all 3 preliminary rounds taken online. However, you must register yourself in a team in order to qualify for finals (Deadline: June 2, 2024).

Step 3: After Registration

  • Participants must provide a picture of their Student ID to verify their student status.
  • For team: Members will be sent an email invite to confirm their participation (Team leaders are automatically accepted)

  • If your team is associated with a school, your school will need to send an email to to verify your association.

Online Testing Groups

*Please be sure to check the local time in your area: Time Zone Converter


Key Deadlines

World Logic Day

January 14, 2024

Registration Open

February 12, 2024

Registration Closed

April 20, 2024

Round 1 Testing Day

April 27, 2024

Round 1 Results Announced

Round 2 Testing Day

May 18, 2024

Round 2 Results Announced

Round 3 Testing Day

June 1, 2024

Team Registration Deadline

June 2, 2024 (1PM PDT)

Finalists Announced

Final Round (At Stanford University Campus)

July 1, 2024 - July 3, 2024


How it works

  • Eligibility: All high school students, 8th grade and up. For verification, you will be asked to upload a picture of your current student ID during registration.

  • Coding experience is NOT required.

  • Contestants are strongly advised to review the Curriculum prior to the start of the contest; please refer to the Contest Structure for chapters to be covered at each round.

  • Registration will begin in February 12, 2024 and closes on April 20, 2024.

  • Fee: First online assessment (Preliminary Round 1) is FREE. Thereafter, participants will be required to pay a one-time application fee* of $100 USD PER PERSON.

    *Fee excludes travel expenses for the in-person final round at Stanford University. All finalist teams are responsible for their own travel arrangements and ensuring their visas (if required) are in order.


Contest Structure

  • Preliminary Rounds 1 - 3 (Online)

    • Round 1 (Free): Propositional Logic (Curriculum Chapters 1 -5)
    • Round 2: Relational Logic (Curriculum Chapters 7 - 10)
    • Round 3: Functional Logic (Curriculum Chapters 11 - 15)
  • Final Round (In-Person at Stanford University)

    • Day 1: Questions with elevated difficulty, topics related to logic types (Propositional, Relational, and Functional)
    • Day 2: Unstructured "puzzles" (examples on Curriculum )
    • Day 3: Awarding of prizes, guest presentations, and campus tours


Cheating and Plagiarism Policy

  • Any student found cheating or engaging plagiarism will be banned from all future ILO opportunities.

  • Penalties for cheating/plagiarism may include disqualification from the current competition, cancellation of awards, and notification to educational institutions.

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