JoJo said:
I'd say it's more of a dance, you wouldn't call ballet a sport.
Is figure skating a sport? Because its pretty similar to ballet, but....on skates, and its an Olympic sport.
But really though, this has left me in such a twist. Having never put thought into it, I wouldn't have called ballet a sport. But putting any thought into I immediately come to the conclusion that its a highly skilled, physically demanding, specific skillset. With intense competition for placement and recognition, at which point large crowds pay a bunch of money to gather and watch the skill demonstrated.
In a logical sense, ballet seems very much a sport, with the actual productions more of an exhibition match by the champions, the real competition having gone on behind closed doors.
Cheerleading I see as a bit more divisive. It both is and isn't a sport, based on the idea its practiced at varying levels. In some places its an ultra athletic dance and gymnastics routine, and totally a sport. In other places, its a social thing with some kids wearing uniforms and waving pom poms while cheering for their school/team.