He LOVES History, and wants to learn to play music - so at least on the surface, it sounds great. But with the focus on international studies and arts, will they put the necessary emphasis on math, reading, etc?
I've learned over the years that what it says over the door of a school and what goes on inside the classroom are too different things.
((BAd joke in my head - laugh along if you can think of other misleading mottos over entrance doors))
Make a list of questions and observe, observe, and ask questions like -
"Can you give me an example of how you handled problem X in the past?"
Personally, I don't have a problem with focusing to this degree at an early age. I think it's easier to do Elementary School Level Math at home or online at school as an independent study than it is to provide class discussion of history and culture.
Good Luck,
Grinity