That's not a huge range - a handful of missed answers - and, I believe, lower than it used to be. I distinctly remember being, at 1490, in the bottom quartile of "Harvard-bound scores". Without any proof, I imagine that Harvard et al. dropping standardized test scores from their admissions requirements has skewed who actually submits them. Legacies will only do so if it doesn't hurt their otherwise venerable pedigree; non-legacies will say, "Well, every bit helps."