The imaging is now so advanced that scientists can already see the difference in the brain networks of those who study a string instrument and those who study the piano intensely.
The brain research, while moving quickly by some measures, is still painfully slow for educators who would like answers today. Morgan, the Washington County schools chief, said some research did help her support the drive to build the Barbara Ingram School for the Arts in Hagerstown.
Mariale Hardiman, the former principal of Roland Park Elementary/Middle School, was once one of those principals who focused a lot of attention on reading and math scores. But she saw what integrating the arts into classrooms could do for students, she said, and she then began her own research into the subject.
She is now the co-director of the Hopkins Neuro-Education Initiative. She said there are a myriad of questions that could be answered in the research that is just starting, but there are two she would like to see approached: Do children who learn academic content through the arts tend to hold onto that knowledge longer? And are schools squeezing creativity out of children by controlling so much of their school day?
Even without research though, Kagan of Harvard said there is ample evidence of the value of an arts education because so many children who aren't good at academics can gain self-confidence through the arts.
"The argument for an arts education is based not on sentimentality but on pragmatism," he said. "If an arts program only helped the 7 million children in the bottom quartile, the dropout rate would drop."