Coach Kiernan has won two National Championships, three State Championships, five CIF Championships and six Southern California Regional Championships. The 2019-20 season ended with a 30-3 overall record, 13th consecutive Trinity League Championship (7-1) and 2020 CIF Open Division Championship, the 1st one in school history.  Coach Kiernan became the all time winningest girls basketball coach in California History this past 2019-2020 season. In 2011, Coach Kiernan was selected as the Orange County Register and Los Angeles Times Coach of the Year as well as the CIF Division 1AA Coach of the Year and the National High School Coaches Association National Coach of the Year.