<p>My son said the chem placement test was so difficult most people left before it was over. He stayed until the bitter end to no avail. He loved his chemistry class though. <a href="http://www-tech.mit.edu/V122/N48/Sadoway_profile.48f.html%5B/url%5D">http://www-tech.mit.edu/V122/N48/Sadoway_profile.48f.html</a></p>