<p>I took the CB test last week and I got 1880
MA: 730
CR: 500
WR: 650</p>
<p>But when I took the PR test this morning, I only got 1640
MA: 590
CR: 450
WR: 600</p>
<p>I was kinda shock. That's a total difference of 240 points. My math score decreases 140 points. Any explanation/answer would be very, very appreciated.</p>
<p>Just because you got a lower score doesn’t mean it’s harder. The tests are made by two different companies (and are subsequently different in material), one of which is the actual maker of the SAT. Stick to test material from CB.</p>
<p>To be truthful, I found the PR tests to be harder than the CB tests…but then again, that’s just a general assessment. Some of the PR tests were more difficult than the others, and some of the CB tests are easier than the others. I think, if you had taken a different PR test, you would have likely received a higher score.</p>
<p>But I agree with crazybandit; CB is more reliable than PR.</p>