<p>I’ve found it accurate it easiness and quality of teaching. There are separate categories to rate, and easiness is only one of them; I’ve found all of the categories pretty accurate. For example, I just had a thermo professor that is rated as very hard but he has a very good overall score. </p>
<p>One problem with the site though is that “easy” often equates to “good”. And if your looking for a good teacher, you have to be careful with those reviews.</p>