<p>It is not all about vocabulary words, although practice tests can help. Presumably it is more about whether you have been reading a variety of “college level” things (books, texts, articles) over the previous months (years). Since you are already a senior, have you thought about just focusing on the type of questions you get wrong (presumably the longer passage based sections of the CR test) and less on general vocabulary? There are also multiple suggestions at this and similar threads on CC:</p>
<p><a href=“Is there really anyway to improve SAT Critical Reading scores?!? - Test Preparation - College Confidential Forums”>http://talk.collegeconfidential.com/sat-act-tests-test-preparation/473047-is-there-really-anyway-to-improve-sat-critical-reading-scores.html</a></p>
<p>Then there is the ACT of course … if your SAT reading scores are staying below 500 even with practice, are you doing relatively better on the ACT? In particular does your ACT practice test show you getting above a 21, if so forget SAT prep and just focus on ACT since you are running out of time.</p>