What do you think about me reporting a professor to the dean without knowing for certain the charges are valid?
Why would you want to jeopardize your professor's career with unsubstantiated accusations?
If he's removed from the class roster, I won't have to take his class, which would be great, because hear he's a brutal grader.
Making false accusations towards someone could lead to trouble. Make sure you are accurate and have evidence to back that up.
There's no way for me to know for sure if what I hear is true. It's something someone told me, which is how I'll report it.
You motivations are very suspect. Why would you want to get involved in ruining someone's career by submitting "evidence" that's based on something someone heard and related to you? That's not evidence, that's hearsay; you need to think long and hard about why you're doing this.