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<p>But there are costs involved in grading the test.</p>
<p>As far as reducing your cost, you can check the colleges you are interested in to see which tests are actually worth something. Then you can drop taking those which give no useful credit at any of the colleges you are interested in. As mentioned above, $87 is not much compared to the cost of a college course that you might otherwise have to take.</p>
<p>English and Calculus are typically the most useful of the AP tests, but several others are much less likely to give useful subject credit in college.</p>