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University grades are assessments of a student's academic performance in their courses, generally represented as letters (A, B, C, D, F) or as percentages. Grades are often calculated based on factors like exam results, assignments, attendance, and participation. Many universities use a **GPA (Grade Point Average)** system, where each letter grade corresponds to a specific number on a 4.0 scale, allowing a cumulative measure of a student's performance across multiple courses.