The United States Invitational Young Physicists Tournament (USIYPT) is an annual physics research and debate tournament for high school students, held the last weekend in January. School-based teams of four students investigate several undergraduate-level research problems in preparation for the tournament. The competition itself consists of "physics fights," student-led debates over the quality of each team's solution. Teams are judged on their own solutions to the problems and on their ability to engage in evaluation and discussion of other teams' solutions. The Harker School of California and Phillips Exeter Academy of New Hampshire have each earned three championships, the most of any school. The 2023 tournament was hosted on February 4th-5th, 2023 at The Nueva School, with Nueva defending their champion title from the prior year.
History
The United States sent teams to the International Young Physicists' Tournament several times in the 2000s, and achieved a second-place finish in 2005. The nonprofit United States Association for Young Physicists Tournaments was incorporated in 2005, initially for the purpose of supporting and training the US team as well as to spread the pedagogical methodology of preparing and conducting the "physics fight." In 2007, the USAYPT organized their own Young Physicists Tournament, inviting school-based teams from around the world to debate over a slate of four research problems. The one-day event at the North Carolina School of Science and Math (NCSSM) included five teams, all from the United States; Woodberry Forest School won the inaugural championship.
The 2008 tournament, also at NCSSM, included the first "international" team: Brisbane Girls Grammar School. They faced Woodberry Forest School, a boys' boarding school in central Virginia. In the final physics fight, Brisbane's Sarah Thang and Samantha Luck outdueled Woodberry's Chris McLamb and Robert Bauer for the title.
For 2009 and 2010, the event was moved to Woodberry Forest School. Raffles Institution of Singapore beat out an eight-team field for the 2009 title. However, the "snowmaggedon" blizzard of February forced cancellation of the 2010 tournament. Instead, two informal mini-tournaments were held in April, one at Woodberry Forest School, one at the Harker School in California.
The USIYPT moved to Oak Ridge Associated Universities for 2011 and 2012, and expanded to a two-day, six-round event. Teams and jurors toured Oak Ridge National Laboratory in between sets of physics fights, viewing the High Flux Isotope Reactor and the Spallation Neutron Source. Official sponsorship in 2011 came from the University of Tennessee department of physics, among others. The Harker School won in 2011; Rye Country Day School of New York won in 2012. Oak Ridge High School won the first-ever Clifford Swartz Trophy for top performance in the tournament's poster session.
The 2014 tournament was held at the Harker School in San Jose, California. The Harker School won the title with playoff victories over Woodberry Forest School and Shenzhen Middle School on the "Magnet Stack" and "Ball Stack" problems. Guilderland High School of New York won the Clifford Swartz Trophy for best poster.
In 2015, the USIYPT moved back to Woodberry Forest School. The final rounds were switched to a pool-play format. The Harker School and Woodberry Forest met twice in those final rounds, with Harker edging Woodberry 79-77 for the 2016 title. Other finalists included Rye Country Day, who were 1/10 of a point off Woodberry's pace; and first-time USIYPT participant Renmin University High School of Beijing, China.
Second-year participant Phoenixville Area High School of Pennsylvania topped the standings after the preliminary rounds in the 2016 USIYPT. They, Harker, Rye Country Day School, and Shenzhen Middle School competed in the final rounds, with Shenzhen coasting to the championship.
At the 2017 tournament at the University of the Sciences, the Harker School was the highest ranked of the six teams who entered the playoff rounds. Rye Country Day School emerged from those rounds with a convincing victory of 77-72 against RDFZ of Beijing, due in part to an especially innovative approach to measuring Planck's constant conducted by Charlie Curnin and Kasey Luo in their high school laboratory.
In 2018, Randolph College hosted the largest-ever USIYPT, including fifteen schools from all over the US and the world. Phillips Exeter Academy won their first-ever trophy in their fourth year of participation.