It may just be that they are waiting until he is "old enough" to take the WISC. Maybe they don't have a WPPSI- plus, he would probably ceiling out. The WISC norms start at age 6. Honestly, I would probably just wait in order to get an accurate IQ result.
Is his K teacher very accomodating? My DD had a GREAT K teacher that gave her accelerated work. The K teacher worked with the gifted teachers to pull some harder work for DD and another girl in her class that were far ahead and bored. I had to do a little more work (sending in some books and being more in touch with the teacher), but it was worth it.
