We saw this first-hand in San Diego. We luckily found a place to rent in a pretty well-off area (Point Loma) and our kids elementary school regularly raised >$250,000 a year for the school (1st through 4th grades). When we moved to a more "normal" school in another state, we found their stretch goal was more like $30,000 and it took all year to get there. The first school paid for multiple extra teachers and aides, as well as lots of other benefits.