Student grades are numerical or letter representations of a student's performance in their courses. They are typically assigned based on assessments such as tests, quizzes, homework, and projects. Grades help teachers evaluate a student's understanding of the material and provide feedback on their progress. Grades are often categorized into a scale, such as A, B, C, D, and F, with A being the highest and F indicating failure. Many educational institutions use a grade point average (GPA) system to summarize a student's overall academic performance, which can impact opportunities for scholarships and college admissions.