Our team is a 4a team and we wrestle many 5a and 6a teams through out the year. Just because your 4a doesn't mean that you can only wrestle 4a schools and so on and so forth. I know that I've only qualified for state once and that I have badly beaten many qualifiers at 5a and 6a. Does that mean 4a is tougher? well maybe in some weight classes. I'm really not for sure, I have never wrestled for a 5a or 6a school.