Here's the link to the WISC IV technical report #7 which describes the use of extended norms and has the tables at the end to use. You do have to have your child's raw scores in order to use the tables.

http://pearsonassess.com/NR/rdonlyres/C1C19227-BC79-46D9-B43C-8E4A114F7E1F/0/WISCIV_TechReport_7.pdf


Patricia - HS mom to 13 yo twins
J - 2E, Crohn's, HoH, Dyspraxia, Bipolar/ASD?
E - 2E, Aud Process+