DD is only 27mo and as I work full time has been in english daycare environment for 2 years now. She speaks both languages quite well for her age although in our home language she can express her toughs more "sophisticated". She learns our language from adults and english from toddlers. She obviously can not learn to speak any better english than her peers. In her english I hear her using identical sentences with her friends. We do read in both languages but whenever there is something in a book she wants me to explain I tend to change to our own language. I really don't see her being able to show her full potential in english at 3 (after 3 years fullday english daycare), she could just show the potential of her friends whom she learned to speak from. [/quote]

That sounds like my dds, although they had more limited English exposure. It was weird to me when the teachers commented on their language skills, as to me, their English was SO below their other language.

However, that year of Pre-K was really significant. I was reading long chapter books to my dd by then, so even when in school she heard simplified language, at home, we'd read Little House books (for example, and a bad one since we only read 2 of those). I also saw a big leap in that year of Pre-K, because she was in a another preschool by then, and at that school teachers did not dumb down their language.

I have friends whose dd tested very high in verbal skills, in a similar situation to yours (full time day care). Especially as they get into 3 and 4, she will start getting more adult language in her....

In any case, I don't think testing too young can yield a reasonable number; in bilingual kids, even less so.