This document provides guidance and best practices for grading student work. It discusses creating a grading system that works for the teacher and emphasizes student mastery over things like effort. It recommends against using zeros for missing work and averaging grades. Instead, it suggests allowing students multiple opportunities to demonstrate mastery through redoing or retesting. The document also cautions against single assignments heavily impacting grades and using grades as punishment. Overall, it promotes grading that provides feedback to students to improve learning.