Boys Thirds Basketball
Schedule
Meet the Coaches
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Assistant CoachAs the Dean of Academics at The Frederick Gunn School, Jason Koza is responsible for leading and coordinating the school’s academic program as well as supporting the continued professional growth of the teaching faculty. He also teaches geometry, serves as a house parent and advisor, and coaches Boys Thirds Basketball. Prior to joining Gunn in 2024, Jason served for nearly a decade as Math Department Chair and a Math Preceptor at Colorado Academy. He also served for five years as the academy’s Dean of Students for 7th grade, and for two years as Head of Special Administrative Projects. At Colorado Academy, he also coached cross country and swimming, coached Math Club, and served as an interim leader for outdoor trips, backcountry skiing trips, and a 10-day community service and cultural immersion program in Costa Rica. He served as a member of the Strategic Planning Board and the Diversity Team and received the Frances Newton Outstanding Faculty Award. He holds a bachelor’s degree in child development from Tufts University and a master’s in educational leadership from Regis University in Denver, earned his Colorado Principal License, and completed a year of intensive training through the Institute for Social and Emotional Learning. Jason began his teaching career following a two-year assignment as an environmental educator and community leader with the Peace Corps in Nicaragua. He taught math and coached cross country and baseball at the Latin School of Chicago, and taught math and coached cross country and soccer at Covenant Preparatory School in Hartford, Connecticut, where he was also department chair.
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Head CoachLuis Antonio Muller Rivera joined the Mathematics Department faculty in 2022. He teaches Pre-Calculus and Geometry, and coaches JV Baseball and Boys Thirds Basketball. Raised in Rahway, New Jersey, which is about 20 miles southwest of Manhattan, he is a graduate of Rahway High School and holds a bachelor's degree in journalism from Elon University. At Elon, Luis was the executive producer of a student-run television sports debate show, hosted his own radio show, which became a podcast, and mentored high school students in a college preparatory program called Elon Academy. He also played for the NCAA Division I Elon Phoenix Baseball Team for two years, and played competitively as a member of Elon Club Esports for two years. Fun fact: Luis was a gymnast from the age of 2 until he was in 7th grade. While in elementary and middle school, he competed at West Point and Temple University, among other colleges. He currently lives on campus and in his free time enjoys watching TV shows with his long-distance friends online.