I would think that you may have problem placing him in an appropriate program initially - unless you can start some intensive English training program right now. Our limited experience was with our 4.5 year old, whose third and weakest language is English...A private school who saw his report said that because of his English problems he should be amongst the oldest in his class, rather than amongst the youngest (his b-day falls just after the cutoff here) - as their students are very verbally advanced. Even though our son's Verbal score was at the 96th (!) percentile (only some supplemental vocabulary scores were quite low). And his GAI was high at 99.9 percentile. So if I were you, I would expect a fight, arguably even more so at your son's age where writing will be much more important! But on the other hand, being immersed in a newer language will stimulate him in new and different ways, which may help for a little while.
