Sure, but a 1M mortgage is about 50K a year at today's rates. Let's say 30K for home upkeep, 10K to keep a car on the road, 10K for utilities, 20K for food and dining.
So 500K after tax - 90K private school for two kids - 50K mortgage payment - 30K - 10K - 10K - 20K = 290K in totally disposable post-tax income. Still not even remotely close to middle class.
sure 1M is OK in SF Bay area (you need to plan for retirement too). But even based on your calculations suddenly 500K is not enough to allow a middle class lifestyle.
So 500K after tax - 90K private school for two kids - 50K mortgage payment - 30K - 10K - 10K - 20K = 290K in totally disposable post-tax income. Still not even remotely close to middle class.