DD was tested at 4 because we thought the results may help in advocating in school - she was in a mixed age Montessori preschool and her behavior was starting to slide downhill FAST. The results were dismissed by the school, but I am very happy we made the decision to test at that time. DD has not been tested for anything 2E and I don't think she will be. The only bump we came across was finding someone who was willing to test DD at 4, all the psychologists in our area didn't test children under 6 unless it was for a disability.