Average SAT scores of admitted applicants at the most selective schools are higher than they were say 20 years ago. I wonder how much of this increase is due to students taking the exams and "score choice". There was also the SAT recentering in 1995. Have SAT II (subject test) scores gone up as much as SAT I scores?

"To see what is in front of one's nose needs a constant struggle." - George Orwell