Princeton University Science Olympiad is a high school competition held at Princeton annually, founded in 2016. We hosted 48 high school teams (~800 students) on campus for a day of competition and inquiry involving 23 events, ranging from paper and pencil tests, to lab practicals, to testing engineering devices built prior to competition. The tournament is run by an organizing team of 20 undergraduates, and assisted on the day of the tournament by 150 undergraduates from over 20 academic departments. Princeton remains the only university organized Science Olympiad tournament with no participation fees, and our mission is to continue making high level STEM education accessible to high schoolers.