<p>Does anyone care to take a stab at the reason for the number of Math 750-800 scores increased 32% since 2003, while the number of CR 750-800 scores remained constant?</p>
<p>I can think of four independent factors that could contribute:</p>
<p>Visio-spatial [Flynn</a> effect](<a href=“http://en.wikipedia.org/wiki/Flynn_effect]Flynn”>Flynn effect - Wikipedia): Since 2003, more test-takers have spent years immersed in Doom-engine visio-spatial video games. This has helped develop their math but not their reading.</p>
<p>Less reading:Students are reading less, suppressing CR scores. More smart students are taking test, and this is thus reflected in Math, not reading.</p>
<p>Math code cracked:SAT Math is more teachable/coachable than CR. Since 2003, students have intensified their SAT math preparation, resulting in more 750-800 scores.</p>
<p>More Asian test-takers: More Asians are taking the SAT. Asians score high in general, but in Math in particular. The increased numbers of Asian test-takers manifests in 750-800 Math scores, without affecting the number of 750-800 CR.</p>
<p>Does anyone think one of these theories is the main explanation? Does anyone have another theory?</p>