What is the typical teaching load for TAs?

Full-time TAs are considered to have a 0.5 full-time employment (FTE) assignment, meaning they are expected to work 20 hours/week as TAs. This includes student contact time, office hours, preparation, and grading. First year TAs usualy teach in the freshman or organic lab courses, where they will be assigned approximately 10 hours/week of contact time — equivalent to three lab sections of freshman chemistry or two sections of organic chemistry.