It is also a "sport" in many counties in Maryland. But I would say for every gain made by making it a sport, there was a heavy price to "high school cheer" as we knew it. (At least in Maryland, many of these changes were all under the guise of Title IX compliance.) The most significant changes were 1) the events for which they were required to cheer and 2) limits on the competitions they were permitted to attend. High school cheerleaders in our county have to cheer at an equal number of boys and girls events. On the surface, that doesn't seem like a bad requirement, until you start having them show up at volleyball games where they must sit quietly in the stands (sort of like having cheerleader at a tennis match!). During the fall season, our cheerleaders cheer at home football games (they can only cheer at an away game by giving up a home game), boys soccer, girls soccer, girls volleyball, girls field hockey and cross country, leaving little time for practices and competitions.
I feel like instead of focusing on equal opportunity in girls sports and truly treating cheer as a sport, they have instead focused on cheer as "supporting" other girls sports equally with boys sports, which in my mind is not the same as "being" a sport. (If that makes sense.)