The answer to this from what I remember a few years ago is that there are only four spots from each District that can wrestle at State. Although they wrestle for 5th/6th at Subs in case one of the top four can't compete at Districts (alternate takes their spot), it is not the same from District to State. I am not sure how this rule came about, and I am not questioning its validity, but that is the way I understand it (fair or unfair).