Are sparknotes sat practice tests good?

<p>I haven't taken one yet, but I've heard that they're very different from the real thing and that their answer key has errors. Is this true and how have your scores from these practice tests compare to your real score?</p>

<p>I have it and I just finished one. Honestly, the critical writing is pretty bad. But writing and math seemed fine.</p>

<p>Well this is a tad late…</p>