Do you feel that this dress is in violation of this dress code?

The situation:

Your child’s public school has a dress code. You take your child to school and approximately 45 minutes later, you receive a phone call from your child. Your child tells you that an administrator has told them they are in violation of the following portion of the dress code: “Skirts and dresses must be longer than mid-thigh.” This is the only portion of the dress code that mentions dresses or skirts and the only portion your child is accused of having violated.

Your child tells you that the administrator wants you to either come get her or bring her other clothing. You can do neither of these things, as you are now 50 miles away at your workplace. You ask your child to put the administrator on the phone, but they are not available, so you speak to a staffer who has no authority and who knows nothing about the situation. You ask for the administrator to contact you and email the vice principal. No response. Your child is sent to class in a tee shirt and athletic shorts given to her by the office staff.

The dress in question is the same dress being worn by the child in this photograph, but in the color black rather than gray. Your child is wearing the dress with black ballerina flat shoes. The child in the photograph is 5’7½” and your child is 5’2”, so the dress is not the same length on her, but actually slightly longer.

http://img.villagephotos.com/p/2003-12/530969/dress.jpeg

My question is:

Do you feel this dress violates the dress code?