hi sai ,

The advantages being:-

1. You only have to study whatever your teacher taught you in class, because he is only going to frame the question paper, and if you are attentive enough in the class you can even trim down your study topics/Syllabus.
2. The Syllabus can be updated very easily on the basis of industry needs as the Red Tape is little less here.
3. Your competition is fairly restricted to people in your class.
4. Not much of travel for clerical work related to university etc.
5. You can explore your subject more, as lot of time if you are attentive in class you do not have to go through it again and you can invest your extra time in learning something new.

due to the above advantages , people usually prefer autonomous colleges .

all the best