Evaluation
In some subjects, students may write essays. An essay is a long piece of writing that includes evaluation. Therefore, the introduction of an essay usually includes a judgment about how good something is and the list of standards that the student has used to make that judgement. The remainder of the essay is spent proving that the opinion formed is logically correct. The writer of the essay may return to the criteria frequently to demonstrate that their opinion is the correct one, given the criteria they have used.