All the students have their unique roll number in school, college, institution, and in all other educational places. All the students should know what the roll number is. A roll number is a unique identification number that can be assigned to a student during admission or after registration.
This number is unique to the student in the class which provides a unique identity. Teachers can not assign the same number to two students in placement. To avoid cases where students in different groups use the same list number, they can set a common prefix for all student list numbers in each group. Prefixes can help determine which course and group a student belongs to. Before assigning these numbers, teachers must choose how the institution will sort students. Students can sort by admission number, first name, or last name.