<p>So I purchased the Mc Graw Hill 10 ACT Practice Tests, and while calculating my scores i noticed they add an extra +2 or - 1 to finalize your score. (for each subsection)</p>
<p>For anyone who used this book should know what im talking about.</p>
<p>Anyways, why do they do this? Is it supposed to act as a curve or somthing?</p>