depends on who you work for
Teaching Assistant (TA) (Former Employee) – San Marcos, TX – June 26, 2016
it all depends on the professor and the class
attending lectures, running labs or office hrs, grading (lots of grading)
work with the prof so you both get out of it what you need.
good chance to master a class you've already taken
depening on the class you could speend more time grading than studying