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since scores tend to rise on the second try by a margin that outpaces the average difference between the two scores.
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<p>Where did you get this information? I don't think that's true. It depends on your initial score on the test. When you get your SAT's back the College Board tells you the odds of your scores actually going down if you take them again. The higher your scores are the first time, the more likely it is for your scores to go down.</p>
<p>There is no blanket rule about taking or not taking the test. My d took the SAT once and got a great score. She took the ACT once and got a great score. She was done. She's going to a top 50 school.</p>
<p>If your scores are good (for the schools you're applying to), and you have no reason to believe that you'll improve substantially - like doing significant extra prep - there's no reason to take the test again. </p>
<p>If you believe you can improve your scores substantially, and it would help you for the schools you're considering, then take it again.</p>