I see no one has answered your two posts. I'm no expert but I see that you speak to him 90% in Turkish. I've seen other posts in the past that reference that the verbal portion can be depressed in bi-lingual kids esp. if tested in the language that isn't primary. Does he need help in school? I've seen many times people recommending to test/re-test delve into problems if program placement is needed or there is a problem. Sounds like you got into the program so I don't know if I'd worry esp. if it's not what you observe in day-to-day life or school work.
Also, The SB-V also has different scores for verbal and performance. It looks like they probably used his Non-verbal performance score in the points matrix but that is of course just a guess.
