ILO 2027

To be eligible to participate in the ILO, you must:

Be enrolled as a high-school student at the time of registration (US Grades 9-12)
Be between the ages of 14-18 by January 1st 2027
Be able to understand, communicate, and complete exams in English

Registering for the International Logic Olympiad (ILO) is simple and takes 5 steps.

Step 1: Create an Account

Create an account on our testing portal. After signing up, you'll receive an email to verify your address. Verification is required to proceed with the next steps.
Creating an account does not automatically register you for the competition.
Financial Aid applicants: after creating your account, do not continue to Step 2. Instead, complete the separate Financial Aid application form and follow the instructions provided there.

Step 2: Register for Your Division

Select the correct division based on your eligibility (see above). You'll be asked to confirm your age and school grade as part of this step.

Step 3: Pick Testing Location

Select your residence location from the provided list for the Preliminary Round Exam. After payment, this location goes through a verification process, so please choose carefully.

Step 4: Upload Identification

Upload a valid form of identification confirming your name, birthdate, school name, and current grade. Because these details are used to verify your eligibility and testing location, incomplete or illegible documents may delay or invalidate your registration.
Preferred: A current school ID card showing your photo, full name, birthdate, grade, and school name.
Also accepted, if a school ID with the required details is not available:
- A letter of enrollment issued by your school (on official letterhead or with a school stamp) listing your name, birthdate, and grade
- A report card or transcript showing your name, birthdate, grade, and school name
- A national ID, passport, or birth certificate showing your name and birthdate, submitted together with a separate school enrollment document confirming your grade and school name

Step 5: Payment

2027 Dates will be announced soon.

Please note that participation in the International Logic Olympiad requires a $50 registration fee

Registration