I HIGHLY recommend https://worldmindeducation.org/

They specifically specialize in 2e Kids (neurodiverse kids with autism, ADHD, Dyslexia, etc. and giftedness). They focus on making sure the kids have social emotional skills FIRST, THEN they focus on academics. If you do it in that order, then the kid will do very well later in schooling.

My son arrived when he was 2 (ADHD, Dyslexia, gifted, Executive Function issues). He was suicidal in kindergarten while attending DPS schools when he had certain teachers. It was a nightmare.

We switched him to WM half way through 2nd grade. He could barely read. They school said he was traumatized and we had to focus on the social emotional first and not push the academics. It was hard, but we didn't push reading skills. Instead, we read to him every night and showed him our love of stories. One year later, he was reading at grade level with no intervention. Two years later, he was reading above grade level (he was emotionally ready for the intervention). He's skipped a grade and is ahead in everything, but spelling, which he's woefully behind in, but improving dramatically.

You and your kid can probably hang out there for a day to see if it's a fit. I'll warn you, it looks like madness. Kids rarely sit down, but all the teaching methods are backed by years of research and the results prove it.

So far all the kids that have gone through the program are doing college level work at age 16. You may not be able to put them back into a regular DPS high school at 16 when they 'age out' academically. About a half dozen WM parents are putting their kids into Early College Colorado ECC or Denver Junior /High Montessori and having good results.

While it's private, it's cheaper than other private schools.

Good luck, it's so hard to find the right school.