This document discusses several methods of grading student performance: - Percentage grading based on exams and assignments - Letter grading using a scale like A-F with possible plus/minus modifiers - Norm-referenced grading comparing students to each other using letter grades - Mastery grading where students must reach a specified level of attainment to pass - Pass/fail grading with two levels of pass or fail - Standards-based grading comparing performance to established content standards It also discusses narrative grading using written comments instead of or in addition to scores or letters.