Was she diagnosed using DSM-IV or DSM-5 criteria? Did you defend the diagnoses using the same criteria? Did you involve your child's personal medical professionals in this and if so, what was their position and if not, why?
What was "so clear" she was not disabled while the doctor diagnosed her as being disabled, especially presuming you gave permission for the examination and testing? If you did not believe there was some issue, why did you allow it to proceed as if there was?
Was an IQ test also used? If so, what was the result of the IQ test?
The school district verbally apologizes, however it has prevented her from going to a school of our choice.
Presuming you did have the diagnosis removed from her records, how is it that the (claimed) incorrect diagnosis is interfering with your choices?
My daughter did not even meet the 3 criterias to be labeled ID.
the 3 criteria:
significant limitations in intellectual functioning: apparently there is an issue somewhere or it would not have gone to the testing phase (which presumably you were aware of and did not object to suggesting you also recognized some issues)
significant limitations in adaptive behavior: again, apparently there was something in your child's life that suggested some issue to you and the school and the doctor.
and onset before the age of 18: is your child over 18? if not, then this criteria does fit
Do I have a case to sue the school district?
Was the doctor that made the diagnosis employed directly by the school? Was there some reason for the school administration to believe the doctor was making incorrect diagnoses?
What are you considering suing the school for? What did they do that was incorrect?