<p>I've taken the 2nd practice test for US History, and I noticed that the curve was much better on the second test than the first. (There was about a 15 point discrepancy) </p>
<p>Is it simply because the questions were harder on the second test? Can I still use the score I received on the 2nd test as an accurate indicator of what I will get on the actual test? Thanks in advance!</p>