A 2008 study measured access to arts education across Colorado and revealed that Colorado public high schools offering arts education have higher scores on state tests in reading, writing and science – regardless of student ethnicity or socioeconomic status. The study showed that these schools also have lower dropout rates. It also revealed that while most schools offer some formal arts education to a majority of students, an estimated 29,000 students attend public schools that do not offer any formal arts education. 

A summary of the report is available here. The full report is available here.