U19: A Competitor may compete in the U19 category until December 31 of the year of his or her 18th birthday.
U17: A Competitor may compete in the U17 category until December 31 of the year of his or her 16th birthday.
Youth: A Youth is a Competitor who in the current calendar year does not attain the age of 19, or who is and has been continuously enrolled in secondary school as a full-time student seeking a diploma. A Competitor thus ceases to be a Youth after December 31 of the year of his or her 18th birthday, or of the year in which he or she completes the 12th grade of secondary school, having been a full-time student, whichever is later.
