1. If you are going to pay for an international school here, you need to do quite a bit of investigating first. Many of the "International" schools have unqualified teachers or rejects from the West. I wouldn't want either teaching my kids, no matter how little it might cost. That being said, there are also schools that seem to have excellent faculty…but you will have to pay for it.
2. If you do have the coin to pay for (excellent) private schools in China, you might as well send the kid back to the US to boarding school once s/he's old enough. Surely a diploma from Choate, Deerfield, Exeter, etc would be more advantageous than a diploma from, say, the Harrow School.