In an analysis of U.S. Department of Education data on more than 25,000 secondary school students, researchers found that students who report consistent high levels of involvement in instrumental music over the middle and high school years show “significantly higher levels of mathematics proficiency by grade 12.” This observation holds true regardless of students’ socio-economic status, and differences in those who are involved with instrumental music vs. those who are not is more significant over time.
–
Catterall, James S., Richard Chapleau, and John Iwanaga. “Involvement in the Arts and Human Development: General Involvement and Intensive Involvement in Music and Theater Arts.” Los Angeles, CA: The Imagination Project at UCLA Graduate School of Education and Information Studies, 1999.