DS8 was tested on the WJ-III, but just when I thought I had completed my own achievement test by learning all about it, DD6 was tested on the WIAT. Sigh. I would rest on my WJ laurels, if not for an upcoming school meeting that promises to be challenging and at which DD's achievement scores will be a key topic.
I would be grateful for any thoughts on how the two tests compare and any relative strengths and weaknesses they may have. Are they pitched to different learning styles or skills? What should I know about the WIAT before waving the scores around?
Another reason I am interested in any differences between the tests is that DD6 scored higher on the WISC (GAI 99.8) than DS8 (GAI 98), but their achievement scores seem closer, to my entirely untrained eye (total achievement DD 135, DS 130). I should add that DS was diagnosed with dysgraphia post testing and I do not know if, or to what extent, that may have impacted on his scores.
