The purpose of this descriptive study was to examine school string teachers' beliefs about and practices of teaching nontraditional music courses. We surveyed middle and high school string teachers (N = 42) about what nontraditional music courses and ensembles (NMCEs) they currently offer and would like to offer to their students. In addition, we examined the educational rationales that string teachers have for offering NMCEs. Our findings indicated that the most frequently offered NMCEs were guitar class, pit orchestra, and music technology. Participants expressed strongest interest in adding fiddle club, popular music, and mariachi ensemble. The participants explained that NMCEs provide opportunities to teach content that closely may more reflect students' cultures and possibly attract a wider range of students. The participants used NMCEs to cultivate musical skills that are often overlooked in large-group setting, including improvisation, playing by ear, and collaborative arranging and composition.