I bet no one could deny the fact that the main responsibility of a high school is to help its students develop academic abilities.
But for a student himself, it is also very important to get fully educated in other fields like music and art as well as basic science.
Music and art can help the students appreciate the beauty in our lives and that will also increase the efficiency of their basic science study.
And on the other hand, research has shown that music and art develop the right part of the brain which often influences one's emotions,and nowadays people talk more and more about the importance of EQ.
So I believe providing music and art education for high school students is absolutely necessary.