<p>hey guys, i took the march sat and i realized (after i got my chem scantron back) i didnt erase my wrong answers COMPLETELY because the eraser really sucks. </p>
<p>but the correct ones are a lot darker....so do you think the machine is going to count me wrong??</p>
<p>It depends. I believe it doesn't single out the darkest mark, but it looks for a certain darkness and consistency. If you have crappy gray smudges (super cheap erasers), I don't think it'll be a problem. If you have solid pretty decently shaded erasures, you'd probably run into issues.</p>