How accurate are practice tests?

[catastrophewaitress]

<p>How accurate is Princeton Review SAT Math IIC tests? Too easy or good measure?</p>

<p>For SAT II Chemistry, are Barron's tests more accurate than Kaplan? I heard that Princeton Review's Chem tests are way too easy? Is it true? I don't know which test to believe!</p>

[icyfire]

<p>barrons i would believe are much harder than the real thing.</p>