It is one stage that its score gives you your classification. The classes go Unclassified, D, C, B, A, Master, Grand Master. It is the average of the last four classifiers that gives you your rateing. When you shoot USPSA the scoring is that you can win your class among other shooters of the same ability.
"They say you can't use a rifle or shotgun indoors because a bad guy will grab the barrel. Yeah? Well, he better hang on, 'cause I'm gonna light him up and it will definitely be an "E" ticket ride."
"Make (your attacker) advance through a wall of bullets. I may get killed with my own gun, but hes gonna have to beat me to death with it, 'cause it's going to be empty."
Clint Smith, Thunder Ranch