<p>If the practice test is one of those official released collegeboard ones, then they really should be the same, difficulty-wise, as the actual test. They are, as futball1991 posted, copies of previously administered SATs. Relative to your other test(s), if you’re score is plus or minus 60-100 or so points, it’s perfectly normal. </p>
<p>However, you should be mindful of the fact that being placed under actual testing conditions can make the test seem more difficult, or influence your performance. On the practices (CB website released and blue book tests), I would score within a certain range…then on test day, I scored about 100 points lower than my mean practice SAT score. And the same goes for many people I know; I personally know a few people who took two consecutive SATs and both times scored lower than on practices (though they weren’t HUGE differences, but still).</p>
<p>Of course, this may not be the case for you. In any case, It’s best to anticipate the possibility scoring ~100 points lower than usual on your actual test. Then, leave yourself a safety net by aiming to score about 100 points over your target on practices. Good luck.</p>