- Dr. Heil's first area of research is focused on effective teaching strategies and curriculum content in middle and high school choral music classrooms. This research includes creative teaching and learning, as well as choices in choral literature selection. Research in this focus area is conducted in public school choral programs with both practicing choral educators and students. Data is gathered in areas of musical and vocal growth as well as perception and attitude. A second area of research focuses on pre-service teacher identity development. This research is conducted with university students studying pre-service teacher education.