A clearly developed scoring document used for evaluating different levels of performance is known as:

A clearly developed scoring document used for evaluating different levels of performance is referred to as a rubric. Rubrics provide a structured way to evaluate students' work by outlining specific criteria and performance levels, which can help ensure consistency and fairness in grading. Each criterion is associated with a range of scores that reflect varying degrees of mastery, making it easier to provide feedback and identify areas for improvement. This method enhances transparency in the evaluation process, as students understand what is expected of them and how their work will be assessed.

While assessment tools and evaluation matrices are related concepts, they do not typically offer the same level of detailed performance measurement as a rubric. Guidelines are more general instructions or parameters, rather than a scoring document specifically aimed at evaluating performance. Thus, rubrics are the most effective tool for clearly breaking down assessment criteria and performance standards.