Why is there a market for college prep books?

[xiggi]

<p>“What’s ERB?”</p>

<p><a href=“http://www.oes.edu/us/ERB-tests.pdf[/url]”>http://www.oes.edu/us/ERB-tests.pdf&lt;/a&gt;&lt;/p&gt;

<p>and you might like this</p>

<p><a href=“http://www.nsgt.org/tests.asp[/url]”>http://www.nsgt.org/tests.asp&lt;/a&gt;&lt;/p&gt;