CGPA-

Grading in education is the process of applying standardized measurements of varying levels of achievement in a course.

Grades can be assigned in letters (for example, A, B, C, D, or F), as a range (for example 1 to 6), as a percentage of a total number correct, as a number out of a possible total (for example out of 20 or 100), or as descriptors (excellent, great, satisfactory, needs improvement).

In some countries, all grades from all current classes are averaged to create a grade point average (GPA) for the marking period. The GPA is calculated by taking the number of grade points a student earned in a given period of time divided by the total number of credits taken. The GPA can be used by potential employers or educational institutions to assess and compare applicants. A Cumulative Grade Point Average is a calculation of the average of all of a student's grades for all courses completed so far.

Most nations have individual grading systems unique to their own schools.