How does CBSE Grade students who have passed their Class 10 and Class 12 Exams?

Here it is:
 A-1 Top 1/8th of the passed candidates
 A-2 Next 1/8th of the passed candidates
 B-1 Next 1/8th of the passed candidates
 B-2 Next 1/8th of the passed candidates
 C-1 Next 1/8th of the passed candidates
 C-2 Next 1/8th of the passed candidates
 D-1 Next 1/8th of the passed candidates
 D-2 Next 1/8th of the passed candidates
 E Failed candidates

Notes:
(a) Minor variations in proportion of candidates to adjust ties will be made.
(b) In case of a tie, all the students getting the same score, will get the same grade. If the number of students at a score point need to be divided into two segments, the smaller segment will go with the larger.
(c) Method of grading will be used in subjects where the number of candidates who havepassed is more than 500.
(d) In respect of subjects where total number of candidates passing in a subject is less than 500, the grading would be adopted on the pattern of grading and distribution in other similar subjects.