similarities = 19 (she stopped when he 'maxed' out, was not given the extended)
vocabulary = 19 (same as above)
FYI, it doesn't work that way. The way it was explained to me is that there are no extra questions for the extended norms. There is just a broad range of scores that come in at "19" (the ceiling if the tester does not calculate the extended norms). If the school will give you the raw scores (instead of the scaled scores), you can figure out if he went higher than "19" by looking at the tables in the WISC technical report #7 on extended norms. There are different tables based on your son's age.
http://www.pearsonassessments.com/N...C-8E4A114F7E1F/0/WISCIV_TechReport_7.pdf