ITA with everything Dottie wrote.
One thing that you might consider - it looks like all of his fluency tests are "relatively" low (compared to the comprehension/etc tests in the same categories - when you group reading subtests, writing subtests, math subtests). The "fluency" tests are the subtests that are timed - it's possible he simply didn't realize working fast was important, or maybe his handwriting is slower than his oral response ability etc.
I wouldn't just automatically assume he "threw" these tests or was having an anomalously bad testing day - those things might have happened but there is a little more in your posts that I would think through. He's not happy at school - that could be boredom, but are you 100% sure of it? Have you sat in on class at all to see what is going on? Does his teacher think he's bored, or does he/she have any concerns? FWIW, my ds13 had significant drops in WJ-III Achievement Scores between when he was tested at 5 and when he was tested again at 7. The lower scores (at 7) were *not* representative of who he is (he now is testing way high again)... but those lower scores were *accurate* in that he had an undiagnosed learning disability, and it was in the WJ-III Scores (combined with looking at his IQ subtest scores) that it first became understandable. The other thing that was going on, at 7, in 2nd grade was.... ds was miserable at school. Not knowing about the disability... to us as parents... it looked very much like ds was simply bored at school. I'm guessing that's not the case with your ds, but based on those lower fluency scores, I would consider thinking through his school day, his complaints, his work, etc just to be sure there isn't something more than boredom going on.
Best wishes,
polarbear
