<p>I’m under the impression that many TAs do a great job as a TA because they want to become professors, and this is good experience for them. </p>
<p>However, in other fields, the TAs may mainly be researchers who look at being a TA or lab assistant as a major distraction from their research, and who only serve as a TA or lab assistant for the grad tuition discount. (Younger versions of Sheldon on Big Bang Theory?) </p>
<p>For those TAs, an organized set of students with a common grievance is the best approach.</p>