A Grade Scale is a system used to evaluate and categorize student performance in educational settings. It typically ranges from letter grades, such as A, B, C, D, and F, to numerical scores, often from 0 to 100. Each grade corresponds to a specific level of achievement, helping teachers and students understand academic progress. Grade scales can vary by institution, with some using a weighted system that considers the difficulty of courses. For example, an A in an advanced class may carry more value than an A in a standard class. This system aids in fair assessment and comparison of student performance.