My dd only spoke English as a full time language for six months before her test, before that she predominately spoke another language. Her ability to read in English was always ahead of the curve, but her spoken English really not so.

In the SB 5 she scored 8 points higher on the verbal portion. So, go figure!

I dont know, I really think somedays test results depend, on whether it is a good day for the child, whether they like the tester and so on.