what are grades?

In schools, what is a grade? Well a grade typically is found either on a scale of F- to A+, F to A, or 0% to 100%, or some other fractional representation such as 33/55(in which would be 33 correct marks on a test with 55 marks). But what I actually want to write down is how is a grade determined? I'm going to lay it out procedurally. At least in lower secondary public australian schools. A grade is a teachers interpretation of a rubrick upon work which was presented and informed based of a students interpretation of a task sheet that was (often) created alongside a rubrick from a teacher's(not necessarily the one grading) interpretation of curiculumn subject guidelines. However it also often includes biases that influence grade such as student 'effort' and quality of things that the rubrick alone nay not state. In upper secondary in south australian public schools. A grade is typically a teachers interpretation of a rubrick or a subject outline upon a peice of work created from the…