Thanks guys for the helpful response.
lovejoypeacce:The teacher said this is possible...How about totally giving up on languages if you can get Dr to give you a letter?
I am mulling over this. However would this give an obvious impression to upper schools and local universities that my kid has hyperactivity by noticing he doesn't have mother language. Would his good math and English score offset this possible negative impression.
The other issue I am mulling over, even if he manages to switch to ML, being possible the only Chinese in the class, would he face peer pressure, children could be mean sometimes.