<p>I agree large gains in test scores are seen in the two examples you provided, language and relocation.</p>
<p>Underserved high schools are in poor areas. Very rarely do these families inherit enough money to afford a home in an area with a high performing high school (many NMSF) as your son’s. Therefore this information will be virtually nonexistent.</p>
<p>As for my daughter, I will never know what her score would have been at age 13. I do know she raised her score from a 26 to a 32 within 5 mos with very little test prep. There is no doubt in my mind that she could score a 34. Scoring a 34 is still less than 2 std dev. </p>
<p>I agree it would be impossible for her to score greater than 3 std dev which would be a score of 42.</p>