Val-
Not to toot a horn but we have a nearly identical school to what you've described. The only major downfall is that it is a charter school for visual and performing arts. It's 6th thru 12th grade but there is a K-5 charter they work closely with. They see many many gifted kids and have a close working relationship with the community college for math and science because that's not particularly the teachers' forte. But if you're a 6th grader and you need geometry, they put you in the high school class with no hesitation. Kids take afternoon specials in their focus area- theatre, art, media, drama, music, dance or vocal. Some of the high school kids actually go to school until 6pm, then have rehearsal for performances and STILL look happy at 10pm!

It's not perfect but it's really, really good.

Now... they have a 100-200 kid waiting list and it's lottery system to get in either in 6th or 9th grade. THAT is a huge bummer.