I got dXed as an adult, and other than having previously submitted background information about what I was like as a toddler and such my dX consisted of sitting in a room with 2 psychologists for an hour, one asked me questions and the other stared at my non-verbals to see what my eye contact and gestures were like. However there are many ways to conduct a diagnosis and yours could be completely different. I guess it wouldn't hurt to bring your grade stuff if it is easy to obtain - the most you'd lose is having to carry a folder into the appointment.
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-M&S
?Two men looked through prison bars; one saw mud and the other stars.? Frederick Langbridge