Let me introduce the context: I need to evaluate how my TAs tend to grade students.
Ideally I would like to pinpoint whether they show some sort of internal consistency (e.g., a TA usually grades almost always above/below a reference grade, or is inconsistent and the grades fluctuate). I would like also to identify a way to assess the goodness of each TA grading w.r.t. to a reference grade I would give or w.r.t. the others TAs grades.
For the first part of my question I was thinking about just variance analysis, whereas the second half I'm not sure.
I'm not really well versed in statistics and data analysis, and I could not manage to identify the right keywords to answer these doubts on my own, so here I am asking for help.
As a side note: grades are usually a single value in a well defined range, such as "78 out of 100" or (less likely) an interval within a range, such as "50-55 out of 100"