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 27, 2018
Full results for the 2018 Invitational have been posted! Please click the image for a full, printable PDF version. Thank you to all the teams for their enthusiasm and for...
February 1, 2017
Score spreadsheets have been updated! Please click the image for a clearer, printable PDF.
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...