How accurate is the "Official 07-08 Practice Test"?

Test Preparation SAT Preparation
1

<p>I took it timed and got a 600 Cr, 640 M, and 740 W (if i get a 10 essay). </p>

<p>I am hoping to break 1900+ on the SAT next week. If i continue practicing all this week, is it possible 4 my real score to be signficantly lower (like a 1700?)</p>

2

<p>I heard it is the March 05 test…</p>