Welcome to the official website of Yale Undergraduate Science Olympiad, widely known as YUSO.

Founded in 2013, the group is composed mostly of Yale undergraduates. We are committed to serving the high school science community by bringing students a high-quality university-sponsored competition, the first of its kind in the nation. Our annual invitationals welcome over 1100 students, parents and teachers on campus for a delirious daylong affair, showcasing students' talents in biology, chemistry, physics, and the engineering sciences. Join us for our next one by following the links above!


January 31, 2016
After a long, exciting day of competition, YUSO is happy to announce that Acton-Boxborough Regional High School from Massachusetts is the winner of the 3rd annual Yale...
September 1, 2015
11/27/15 Update: Waitlist is now closed. 09/29/15 Update: Registration is now closed. Thanks to all for the interest! Waitlist form is available under the “Division C...
August 26, 2015
We have finally posted our favorite pictures from the 2015 YUSO Invitational! Head over to the “Gallery” tab to check them out! We are still working on getting the full set...