How CBSE grading system would work?

With Board exams being made optional from the academic year 2010-11, a new system of evaluation Continuous and Comprehensive Evaluation (CCE) based on grades has been approved. It comprises formative and summative assessment of the student to be done over two terms first and second during the year-long academic calendar.

Formative Assessment :

To evaluate and grade class work, homework, assignment and project work
1. There will be two evaluations each in the first and second terms
2. Each evaluation will carry 10 marks apiece

Summative Assessment

Based on the term-end examination
1 There will be one term-end exam for each term
2 The first term-end exam will carry 20 marks
3 The second term-end exam will carry 40 marks

EVALUATION

Students of class IX and X will be evaluated on a 9-point grading system. Each grade, given on the basis of both formative and summative assessments, will correspond to a range of marks as indicated below:

A1 95 and above
A2 90 to 94
A3 85 to 89
B1 80 to 84
B2 70 to 79
C1 60 to 69
C2 50 to 59
C3 33 to 49
D Less than 33

Remember:

(i) Assessment of theory/practical papers in external subjects shall be in numerical scores.In addition to numerical scores, the Board shall indicate grades in the marks sheets issued to the candidates in case of subjects of external examinations. In case of internal assessment subjects, only grades shall be shown.
(ii) Subjects of internal examination in Class X the assessment shall be made on a five point scale I.e. A,B,C,D & E.
(iii) The grades shall be derived from scores in case of subjects of external examination. In case of subjects of internal assessment, they shall be awarded by the schools.
(iv) The qualifying marks in each subject of external examination shall be 33% . However at Senior School Certificate Examination,in a subject involving practical work, a candidate must obtain 33% marks in the theory and 33% marks in the practical separately in addition to 33% marks in aggregate, in order to qualify in that subject.

How CBSE grading system would work?