M.M.
Twins run in the family and after years of teaching and having a brother and sister who are twins one thing I know we have a tendency to do is to treat them like they are one person--whteher they are identical or fraternal they become "THE TWINS" rather than individuals. WE will call all the other kids by name and get to them and say, "THE TWINS." They are different entities with different learning styles and personalities. I would not dress them alike unless they feel like dressing alike. I would respect that they like different things sometimes and that they can participate in separate activities. My identical cousin twins are now in their 50's and one still goes out of her way to look and behave differently from her sister so that others will realize they are individuals.
The place to go for educational evaluations through the school system is to the pupil appraisal department. Look under special education or CHILD SEARCH. You can also call information at the school board office and they will refer you to the right place. If it's just the emotionality of being a twin they will be able to tell you that also, through this free evaluation process.