Please don't interject that kind of rudeness here. The school my sister-in-law teaches at has little in common with your demographic description. It's bland middle class with mild (very mild) alternative tendencies. What it has in common with the school in the article is basic Waldorf principles: eschewing technology in the early grades, emphasis on imagination and handwork and so on. The Silicon Valley aspect of the article is a red herring, no doubt because it's attention-getting, but perhaps also because the author doesn't realize this is simply an instance of a type.