Why do so few students continue to participate in choral music through high school? How do home influences, peers, prior music experiences and teachers, self-perceptions of ability, and musical experiences outside of school contribute to decisions concerning participation in school music? This study attempted to identify some of the factors and influences that may predict continued participation in choral music for high school students. The survey was conducted in Southern California at a large suburban high school in the spring of 2005. Of the 288 subjects who completed the survey, 176 were enrolled in vocal music courses and 112 were not. Logistic regression analyses indicated that the factors that predicted continued participation in choral music for these high school students were positive support and parental involvement at home, positive music experiences in elementary school and middle school, a positive self-concept in regard to music skills, and the support of peers. (Contains 1 table.)