Why Music Matters for Brain Development
When school budgets get tight, music is often one of the first things on the chopping block. The research on what music actually does for a developing brain makes a strong case for the opposite priority.
Music changes brain structure — and the changes last
Learning to play an instrument produces measurable changes in the anatomy and function of the brain — and these changes persist even after formal music training stops. Adults who received music instruction as children show stronger brainstem responses to sound than those who didn’t, and the strength of that response is connected to how recently they trained — meaning earlier, sustained music education has a lasting neurological signature.
Music helps regulate stress
Music doesn’t just support cognition — it measurably affects the body’s stress response. In one study tracking preschoolers’ cortisol (a stress hormone) across a Head Start school day, child-directed music and movement activities were associated with lower cortisol levels compared to teacher-directed activities. In other words, the way music is delivered in a classroom — giving children some agency in it, not just having them passively follow instruction — appears to matter for its calming effect.
This matters even more for children already managing chronic stress. Lower cortisol over time supports better attention, memory, and emotional regulation — exactly the capacities that chronic stress otherwise undermines.
Music training builds inhibitory control
Inhibitory control — the ability to stop yourself from acting on an impulse — predicts academic success, emotional wellbeing, and even long-term health outcomes. A multi-year study following children from underserved communities found that children with sustained music training showed measurable improvements in inhibitory control compared to children in sports programs or no structured after-school program, with effects becoming apparent after about three years of training. Separate research on preschoolers has found that music training improves inhibitory control for children from both lower-income and higher-income backgrounds — meaning the benefit isn’t limited to one socioeconomic group.
Music is connected to attendance, too
Schools with more robust music and arts programming have been associated with lower chronic absenteeism and higher overall attendance. Researchers studying this link point to music’s role in stress regulation and emotional connection as a likely part of why — when school feels like a place that supports a child’s whole self, not just their academic output, kids show up more.
Why this matters for advocacy
If your child’s school is considering cutting music programming, or if access to music education feels limited compared to other subjects, this research gives you a concrete, evidence-based case to bring to a principal or school board — not just a values-based one. See Sports, Music & Arts for the legal side of fee barriers and access, and Parent Involvement & PTA Rights for how to raise this formally with a school board.
This page is for informational purposes only and does not replace guidance from your child’s pediatrician or a qualified professional.