"I realize that ADHD is often over-diagnosed as well as under-diagnosed. As a social worker, what can I do to help parents seek out an evaluation that is thorough?"
by Larry Silver, M.D.
I share your concern. The diagnosis is not made because someone sees certain behaviors.
First, you have to confirm the presence of one or more of three behaviors: hyperactivity, distractibility, and/or impulsivity. Then, you have to show that these behaviors are pervasive (that is, they occur in most settings - school, home, activities, sports, play time).
Finally, you have to show that these behaviors have been present over many if not most years. You might get a copy of my book, Dr. Larry Silver's Advice to Parents on ADHD, and suggest that the teachers you are concerned about read the chapter on diagnosis. You might share this chapter with parents before they go to their family doctor.