Professors from Florida, Michigan, and others offer their answers to this question with surprising variety. Some I’m on board with:
Due to a lack of state level policy regarding music education, many children have no music teacher in their school building. Although there are rich opportunities for outside of school community music in the United States, many children cannot afford to pay for music instruction outside of the school setting. Citizens interested in making a difference in music education must advocate for a well-prepared, certified music teacher in every school building.
While others have me scratching my head:
The most important issue in music education today is one that has existed for as long as has formal music education: assessment.