The "Letter C (Grade)" is a common academic evaluation that signifies satisfactory performance in a course or subject. It typically represents a score range of 70% to 79% in many educational systems. This grade indicates that a student has met the basic requirements and demonstrated a reasonable understanding of the material. In the context of grading systems, the letter grade C is often seen as average. It is part of a broader grading scale that includes other letters such as A, B, D, and F. Each letter corresponds to specific performance levels, helping educators assess student progress and achievement.