Kaplan/Princeton review/Sparknotes VS the real Lit/Chem test

Test Preparation SAT Subject Test Preparation
1

<p>Can anybody give a comparison? I am practising from the Kaplan book for the Lit test and from Kaplan/Barrons for chem.
Thanks :)</p>

2

<p>HELP!! Bumping this uuup.
Thank you.</p>