The USA Biolympiad (USABO), formerly called the USA Biology Olympiad before January 1, 2020, is a national competition sponsored by the Center for Excellence in Education to select the competitors for the International Biology Olympiad.
At the end of the two weeks, four students are selected to represent the United States at the International Biology Olympiad.
Ever since the CEE (Center for Excellence in Education) started to administer the USABO exam, all four members of the Team USA in the years 2004, 2007-2009, 2011-2013, 2015, and 2017 were awarded gold medals in the International Biology Olympiad, with the US National Team able to accrue the most medals and subsequently win the IBO in 2011, 2013, 2015, and 2017, partly due to the rigorous selection process students undergo to compete in the IBO for the US.
The top 10% of all participating students advance to the semi-final round, which is usually administered in March.
Part B has more complex, sequenced multiple select questions that may have several correct answers and may require calculations or extensive interpretation of graphs and multiple true/false choice questions, while Part C normally takes the form of short answers or an extended essay.