Parents who think they're coming out ahead by paying less for a home in a neighborhood with substandard schools and sending their kids to private school might want to run those numbers again, according to a recent analysis by Trulia. A couple buying a $300,000 home will have effective monthly housing costs of $1,326. Tack on $912 a month more for private school tuition (the national average, for one kid), and now you're paying $2,238 for housing and school costs every month -- enough to buy a $520,000 home in the same neighborhood, Trulia found. "That’s a lot of extra house -- or a neighborhood with much higher-rated public schools -- if you’re not paying for private school," Trulia Chief Economist Jed Kolko noted in a blog post. Of course, homes served by highly rated public ...