Marks, often referred to as scores, are numerical representations of a person's performance in an assessment, such as a test or exam. They are typically used in educational settings to evaluate a student's understanding of a subject. Marks can range from a minimum to a maximum value, with higher scores indicating better performance. In many educational systems, marks are expressed as percentages, letter grades, or points. For example, a score of 90% might be considered an 'A' grade, while a score of 60% could be a 'C'. These scores help teachers and students identify areas of strength and areas needing improvement.