Why is SAT so ridiculously easy that thousands have perfect score?
It was "recentered" in 1995. The right side of the distribution was essentially truncated. A 1600 on the pre-1995 SAT was quite an accomplishment (I don't have data at my fingertips, but in most years, fewer than 10 students achieved a perfect score of 1600 and only a few dozen scored 1550+). By contrast, several hundred students a year scored 1600 on the recentered test. The scoring system has been changed several t…
Lopping off the top of the distribution looks to me like a recognition that pre-recentering scores in the top 100 points or so were essentially measuring the luck of top-performing students on which questions they drew and how well their educated guesses landed.