This study examined differences in the academic performance of students in grades 6, 7, 8, 9, and 11 in Seventh-day Adventist schools in the United States and Bermuda based on their level of involvement in school music organizations--band or choir--and school sports--varsity or intramural--as measured by standardized achievement and ability tests. Students in the study were classified as (a) not involved, (b) somewhat involved , measured as up to two hours a day, or (c) very involved, measured as more than two hours a day. The study showed that students with high levels of involvement in band and choir earned higher mean achievement scores, while students involved in sports, whether varsity or intramural, earned increasingly lower means as their level of activity increased. Independent variables grade, gender, ethnicity, and annual family income did not alter results these findings in any significant way. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]