<p>How accurate are they compared to the real thing?.. and how are they compared to PR and Barron's?</p>
<p>I found sparknotes to be pretty accurate…</p>
<p>however, the collegeboard’s official SAT physics practice exam is really throwing me off… I do horribly on Sparknotes and got a 690 on the collegeboard’s practice exam. The collegeboards practice exam does not strike me as very mathematical, the real exam (took it in May), has much more math, so know your formulas!</p>