In principle, teaching assistants can't teach alone, or they can't teach all the courses of a subject. They should follow the lecturer or professor to revise their homework and assist them in teaching. Teachers' professional titles rank from low to high as teaching assistant, lecturer, associate professor and professor. The basic meaning is auxiliary teaching.
Extended data:
The "teaching assistants" in colleges and universities don't know when they disappeared, and even if they exist, they exist in name only. For example, many university teachers are now asking for promotion: five years after graduation, two or three years after graduation from master's degree, and they can participate in the evaluation and appointment of lecturers after graduation from doctor's degree. This regulation obviously equates the process of degree and education with the process of "teaching assistant", not to mention the "starting class" link.
At present, key universities still emphasize the process of "teaching assistant" more or less, and there are also some related systems.
Private colleges and universities that can develop rapidly can't take care of the process of "teaching assistants" because of the shortage of teachers. Often graduate students or even undergraduates go directly to the podium as soon as they graduate. If they haven't figured out their professional ideas and knowledge, they dare to take any classes. I really don't know how to take this course. The good tradition of the past has been lost, and it is difficult to improve the quality of undergraduate teaching.
References:
Baidu encyclopedia-teaching assistant
References:
People's Network-Give full play to the positive role of the "teaching assistant" system