<p>I think it has to be very unevenly distributed. At DS’ private high school, in his class of 129, 10 have total scores >2250 (they only report the 2400 scale), and 25 with scores >2100. But in the rural district where we lived a few years ago, one NMSF was considered great. In many of the urban schools near us, I’ll bet they haven’t had one in years.</p>