system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: It is the obligation of the teacher to make sure that he/she is understood verbally, audibly and scripturally if he/she wants to deliver content effectively to facilitate learning

All jobs have certain requirements. While it might not be absolutely necessary to possess them, it is a huge bonus. A teacher/professor needs a degree/PhD to teach something. But a lots of other skills prove useful.

A teacher must be able to clearly communicate ideas to students - whether verbally or by writing it down. If they can’t be heard or their handwriting isn’t good/clear enough, they don’t get to excuse that by simply saying, “Tell me if I’m not loud enough” or “Tell me if you can’t read something that’s written”. If you know your handwriting isn’t good, work on it. Do not expect students to point out every 10 inches of the board asking what that letter or symbol means. Students usually don’t want to disturb the lecture, it breaks the flow of the content delivered and lets face it, it’s annoying. 

This is especially true for math, physics and engineering students where all sorts of weird symbols and parentheses are used. There have been incidents where simple misinterpretation leads to difficulty in comprehension, errors in exams and incorrect understanding of content.  

I have personally looked at all my classes and many of the classes and professors I’ve liked were good at this stuff. Not saying there’s a causation, only a correlation. 

Of course, reasonable limits apply. I’m not asking for professors to be calligraphers or make every lecture as good as TED talks but a decent standard is a reasonable expectation.
gpt
Teachers are not psychic. 

How are they supposed to know if they aren't being loud enough without someone telling them? Even if you know your handwriting is a problem and are working on it, how are you supposed to know if "working on it" has paid off or not unless someone says something about it?

Communication is a two way street. The only way for a teacher to know that they aren't being understood is for someone who doesn't understand to say so. If a teacher is obligated to be understood, then it's the obligation of the students to make clear when they are not understanding.