<p>I knew a guy at MIT (30+ years ago) who didn’t go to classes in some subjects except for tests and to pick up/turn in problem sets. He read the textbooks and learned the subjects on his own. EE major, I believe. He graduated fine, and got a job.</p>
<p>I also knew kids who took tests sober and stoned, and determined that they did better stoned.</p>
<p>Go figure.</p>