Well, I've met at least one person who advocated the idea that wikipedia should contain any information that was true. When I asked him if I then should be able to create a many-terabyte article entitled "List of random numbers that hugh3's computer generated at [such and such a date and time]" then he said it should. So there are certainly some folks taking up that extreme position.
Otherwise you're just arguing at the margin. Maybe the notability criteria for schools are too strict. Maybe they're not. I can't think of anything about which I give less of a damn. (For what it's worth I checked, and my high school is certainly listed while one of my two primary schools is and the other [no less intrinsically notable] redirects to the particular suburb in which it is located].)