In general, there are many advantages to being involved with the arts. I've made an acronym to explain just a few of the advantages.
A: Academic Development
R: Respect For Diversity
T: Think Out of the Box
S: Social Development
Academic Development: In an A+ school (a school that has arts incorporated into the curriculum) the arts can help students feel successful. Also, arts can give students a new found self confidence. Therefore, the students can carry over the confidence into their academic life resulting in academic success.
Respect For Diversity: A person can learn about cultures and lifestyles of other people by looking at sculptures and paintings.
Think Out of the Box: Arts allows a person to think on the creative side of their brain instead of the analytical side. Therefore, when a student uses arts to learn math, they are using the creative side of their brain. Also, in any form of art there is no set answer.
Social Development: Any person is capable of some form of art no matter what their age and background may be. Therefore, the arts can knit together different people resulting in a bond that can help diminish differences.