People making six figures don't need to worry about paid family leave. Their companies offer it to both men and women nowadays. And at that level of income, they probably ought to send their kids to private school to keep them away from the undesirables. And I'm so sure, they want extra competition for their children in college applications and the job market.
Many, many upper middle class suburban families (if not a decisive majority) live in areas with high-performing public schools. If your local high school has top-notch academics and athletics, why bother paying over 10k/year for a private school?
Anything to keep the heathens at arm's length. No price is too high.