None?

<p>is "none" singular or plural?</p>

<p>i've been through many different grammer and english sites and i have yet to find out. some say singular (because it replaces "not one"). some say plural (because it corresponds with the verb)</p>

<p>SPECIFICALLY on the SAT, which do they use?</p>

<p>by the way, any good grammer sites that can help me raise my writing score? i really need it. thanks!</p>