My name's Nate. I was enrolled in independent studies for my freshman and sophomore years of high school, so I was unable to participate in sports. In addition, I hadn't planned on attending the Air Force Academy until last year, my junior year. During my junior year, and now during my senior year, I am unable to participate in many sports due to responsibilities at home. For example, I help my mother manage her party delivery business because she has several medical problems. This keeps me from being able to participate in sports during the week. How should I explain this on the Candidate Activities Record? Also, as an off-topic question, is chemistry a required course for admission to the Academy? When I enrolled at public school last year, I was given physics, and they said that colleges accept Physics instead of Chemistry.