A student ID is a unique identification number assigned to each student by an educational institution. It helps schools and universities keep track of students' records, including grades, attendance, and enrollment status. The student ID is often required for accessing various services, such as library resources and online course materials. Typically, a student ID is issued upon enrollment and remains the same throughout a student's time at the institution. It can be found on student identification cards and is used in administrative processes, ensuring that each student's information is accurately managed and protected.