Reporting from Baltimore — For years, school systems across the nation dropped classes in the fine arts to concentrate on getting students to pass tests in reading and mathematics.

Now, a growing body of brain research suggests that teaching the arts may be good for students across all disciplines.

Scientists are looking at, for instance, whether students at an arts high school who study music or drawing have brains that allow them to focus more intensely or do better in the classroom.

Brain research in the last several years has uncovered startling ideas about how students learn. First came proof, some years ago, that our brains do not lose brain cells as we get older, but are always capable of growing.

Now neuroscientists are investigating how training students in the arts may change the structure of their brains and the way they think. Does putting a violin in the hands of an elementary school student help the child do math better? Will learning to dance or paint improve a student's spatial ability or ability to learn to read?

Research in those areas, Harvard University psychologist Jerome Kagan said, is "as deserving of a clinical trial as a drug for cancer that has not yet been shown to be effective."

There aren't many conclusions yet that can be translated into the classroom, but an interdisciplinary field is emerging between education and neuroscience.