This will be the dorm for our Elite group. You can not test to get into this area. You have to be invited, and even then you must take a test to see if qualified.
The X-Saber Orange Dorm will hold most of Rose Knight's best duelist. This is the highest dorm you can get into from testing, and it means that you are an excellent duelist for getting in.
The Photon Blue Dorm is full of students who are of average skill. It means that you aren't quite skilled enough to take on the best, but you are still a pretty good duelist and should be glad to make it into this dorm.
The Karakuri Red Dorm is going to be full of the lesser students in the academy. Being in this dorm does not at all mean you are a bad duelist. It just means that you need to work on your skill, and being in this academy will make it happen.