text: The top 20 scorers on the USNCO National Exam are invited to participate in the two-week USNCO Study Camp at the United States Air Force Academy in Colorado Springs, Colorado. At the camp, the students are tested (both free response and lab testing), and the top four students are selected to comprise the U.S. IChO team.  Two alternates are also selected, although no alternate has ever actually been called up for duty.
  In addition, the top 50 students are recognized as achieving "High Honors", and the next 100 students earn "Honors" designation.