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.
SourceHere are some more websites to find more information about how music education can boost your child's development:
How Students Benefit from Music Education in Schools
11 Facts about Music Education
Quick Facts about Music Education
Music Education in Public Schools