DO NOT USE SITES LIKE RATE MY PROFESSOR
The sad fact of reality is that the most common problem with voluntary satisfaction surveys (which all pharmacists should know about from learning about study design), is that most of the people who respond are people who have a motive to respond. Note, that motive and reason/cause are two different concepts! The result is that people with grudges respond, and most of the people who love the professor don't.
When I was a TA for gen chem, I had horrible scores from my students. Most common complaints about me - quizzes were too hard, too long, too many questions... But here's the funny thing - the average on the exams (which the professor wrote and I did not see before it was given) was absurdly high in my sections compared to the other sections. Out of 250 total students in non-honors gen chem, I had 30 in my section. Of my 30, 15 placed in the top 10%. Another 8 placed in the next 10%. So either I was non-randomly assigned the scholars of the gen chem or I did my job of teaching well. Not one of the comments for me was positive, yet a year later several students thanked me for teaching them gen chem because it saved their butts in organic when they got there.
So read the comments if you want, but please, don't base your decisions on them.