Lugar Choi graduated from Northwood High School in Irvine, California. He swam with Irvine Aquazot Swim Club for five years. He started swimming when he was three but did not start competitively until he was ten years old, representing Golden West Swim Club in Huntington Beach, California. During his high school season, he won numerous awards for his leadership and was Men's Captain his senior year. In 2003, he anchored the last relay (200 free relay) that finished first to take the number one spot as a team in California Intercollegiate Federation Swim competition. By his junior year, he won 200 yard freestyle with the time of 1:40.87, which was CIF Master record. He also won 100 yard freestyle with the time of 46.48. He currently holds the high school record in 100, 200, 500 free, 200 medley and 400 free relay. Lugar participated in numerous extra curricular activities including Football and Wrestling and won the Most Valued Wrestler in 2004. He was also an Editor for school newspaper as well as reporter for a local newspaper.