A course ID is a unique identifier assigned to a specific course within an educational institution. It helps students and faculty easily locate and reference the course in academic systems, such as registration platforms or learning management systems. The course ID typically consists of a combination of letters and numbers that may indicate the subject, level, and semester. For example, a course ID like ENG101 might represent an introductory English course for first-year students. This system ensures that each course is distinct, preventing confusion between similar courses offered at the same time or in different terms.