Argh. I just had a whole post disappear!
Everything polarbear said, and,
Consider the PAL-2 writing fluency and accuracy subtests. Handwriting Evaluation Scale (optional holistically-scored legibility scale from the WJ-III, uses the product of the writing samples subtest).
Put plenty of detail about your exact concerns--needs, skills, behaviors--in your request letter, and ask for a call from the evaluator. Sometimes it's helpful (though admittedly I find this annoying myself when I get one) to get a note from the pedie with a list of example assessments. When the consent form arrives, you can add other assessments, like home assessment/developmental history, OT, PT, SLP, if you're not satisfied with what they've checked off. Ask for a call from the evaluator right on the consent form, which may be the only document they get to see. Wait a few days after returning the signed consent, and call and ask for the name, number, and email of the evaluator to whom it's been assigned.
While districts differ, of course, in every system I've worked, this would get me a call or note from the director, requesting that I contact the family prior to testing.
