A typical day consists of you logging in (this clocks you in, you can work from anywhere/from home) and scoring responses to standardized exams. Scoring is based on a rubric. It can get pretty complicated, with criteria reaching up to 4 points but the benchmarks are pretty clear and the supervisors are ready to answer any questions if you are not sure.
I guess the hardest part of the job is working fast while staying accurate and dealing with a repetitive task. However, the best part is that you practically set your own schedule so you can do this work as a second job or while in school and still have a life.