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<p>The reason lower income kids don’t do as well on the SAT is not really because they can’t afford expensive prep classes. It’s very possible to get a good score just by using the CB Blue Book and Direct Hits vocab. IMO the real reason why lower income kids don’t do as well on the SAT is that their school systems aren’t nearly as strong as those of higher income kids. As a result, the low income kids don’t know the material on the SAT as well as high income kids.</p>