<p>lol i use separate sheets of paper for everything. so mine are all mark-free. 
hoping to sell for 5 bucks each. or just keep as part of collection?</p>
<p>Ahaha, that bonfire idea is tempting. Most of mine are fairly clean, I so I guess I’ll either give them to friends or sell them for like 2 - 5 bucks. I think one of them I haven’t even cracked open.</p>
<p>Giant bonfire obv</p>
<p>I got like 3 for Environmental Science, 3 for Human Geography, and 2 for US History. I will probably donate them to people and keep a little.</p>
<p>Sell them on eBay.</p>
<p>I keep them, they are useful and interesting.
Just me though, I’m a huge nerd at heart.</p>
<p>I’ll lend the old AP review books to those who are taking the course next year. I’ll let them keep the books for the whole year.</p>