Every school reports the "middle 50%" for SAT scores. What exactly does this mean? Does this mean 50% of all scores, or 50% of all students? Because if it's 50% of all students and not scores, there are probably a lot more scores at the lower end of the range. For example, it a school says the middle 50% is 1200 to 1350, is it likely that most of the scores within this range are closer to 1200 than to 1350? Does my question make sense?