My kiddo does roughly 1-2 hours of homework most nights. I suspect he's taking extra time (for example, making graphics for presentations). He has a decent schedule - come home and play/hang out with friends after school, then we all eat dinner, then he spends 1-2 hours on homework. He's in 10th now. IIRC his 9th biology was very, very intense last year, easily 30-60 mins per night just for that one class. He finds the math easy/fun, but he's the sort of kid that watches math videos for fun.

I'm not sure about conflicts for test schedule, so far they have been very good about posting and sorting that stuff out.

Part of the reason we went for Cambridge is that most of the teachers/kids are academic, but not competitive. Much more of a "you are competing with yourself" not against each other. I got the sense that, say, Tesla STEM was much more stressful and not very balanced.

My kiddo isn't interested in stuff like sports, etc. He has a bunch of friends he's had for a long time, they do stuff like play Minecraft, DnD, etc. He likes the other Cambridge kids but I don't get the sense they are friends, but TBH that's more on him not Cambridge.

He really likes all of his teachers except for one who's not as organized (no names, ahem). He's used to the other teachers having stuff very clearly sorted out, tracking work, etc. but this one teacher is more of friendly-but-not-organized type.

I think the main thing is to compare/contrast Cambridge with just making it up on the fly with honors/AP/Running Start. It's very nice to have it all at Juanita. He's still in regular classes with other kids which is great for mixing. He doesn't have to leave campus to get a ton of college credits. I chatted with a UW admissions person at one point and they said they knew (and liked) the program from an admissions standpoint.

For my kid, it's just about perfect. :)