Kinds of Grading System:

A grading system in education is a system that is used to assess the educational performance of a child which is entirely based upon points alone. 

1. Percentage Grading:  from zero to 100%;
2. Letter Grading and Variations: from A to F;
3. Mastery Grading students: as "masters" or "passers" when their attainment reaches a pre-specified level.
4. Non-referenced Grading: comparing students to each other usually letter grades.
5. Pass/Fail: using the common scale as pass or fail.
6. Standards or absolute standards Grading: comparing students performance to a pre-established standards.
7. Narrative Grading: writing comments about students.