My POV is as someone who grew up in the Silicon Valley and attended Silicon Valley public schools (and recently enough to feel that this is relevant.)
There are a lot of factors at play, but I guess what I would consider most important is: are your kids happy? Are they flourishing in the culture of their current school? Do they have friends, are they participating in extracurricular activities, do they like their cohort, do they like their teachers? Is this school environment enabling them excel, or not? Does their school environment feel like they're being crushed to fit a specific mold, or is it giving them the tools to achieve their own dreams and best selves?
Back in the day, I did flourish in that environment - the sense of competition didn't bother me, academic challenges energized me, I liked my fellow students, and I felt like the high expectations ("of COURSE you'll go to a top tier college, of course you'll take 98497324 AP courses, of course you'll get straight A's) were natural results of my environment. Many of my peers felt the same way. I was friends with the children of lawyers, doctors, government officials, tech company CEO's and CFOs. If I was so inclined, I probably could've leveraged that as a network for my future career success.
This was not the case for my sibling, who felt that the same schools and same environment and same culture was stifling, pretentious, and ultimately worthless. They rebelled against the expectation of excellence, they felt that their best was not rewarded, they felt that they were being cast into a mold against their will, and struggled against that with all their might. Many of their peers, I'm sure, felt the same way.
The Silicon Valley schooling environment can feel like a pressure cooker - is enables some kids to shine like diamonds, but many children aren't well suited to that.