Our Competitions

We run two annual competitions analogous to the USABO Open and Semifinal exams, and registration for our 2026 Summer Challenge is open now.

Summer Challenge

Registration open now!

Test your biology knowledge from July 18 to 25, 2026. The exam is available to take any time during the competition window.

50 MCQs

USABO Open format

Open

To all students

Prizes

Certificates and cash

Register Now Join the Discord

Rules & Information

Open to high school students globally, our exams will take place online. They will be available to take all day. Explore the complete guidelines in our official rules document!

Sign Up for Updates Read the Rules

Competition Rounds

Our two-round system is designed to challenge and prepare students for national-level biology competitions.

\(p+q=1\)

This is the first round of our competition, mirroring the difficulty of the USABO Open exam. The test consists of 50 multiple-choice questions to be completed in 50 minutes, with 5 choices per question.

\((p+q)^2=1\)

This second round corresponds to the USABO Semifinals exam. The test consists of 100 questions in 120 minutes, featuring 65 multiple-choice and 35 multiple-true/false questions.