<p>This year's crop of college-bound high school graduates had the highest average mathematics scores in more than three decades on the SAT.</p>
<p>The national average math score on the SAT this year was 519 — three points higher than last year and 14 points higher than in 1974 — according to the College Entrance Examination Board, which administered the test to 1.4 million students in the class of 2003.</p>