<p>The more ratings/reviews a professor has, the more reliable it’s going to be.</p>
<p>Also, check if your university has its own resource. At the end of the semester at my university, students are strongly encouraged to fill out the TRACE survey and provide comments for the instructors in all of their classes. It’s a way more thorough resource than Rate My Professor, and it’s available to all students to see the reviews afterwards.</p>