We know very well that absolute performance has a wide spread in any class, so it hardly helps if one child gets 2 out-of 10 and another 9 out-of 10. The good grades of one child don't percolate to another child like osmosis !
Percentile is even worse way to evaluate a child (compared to absolute marks) as it enhances the competency differences and has less to do with progress of each child. These marking schemes are like a fuzzy snap-shot of progress in time.
It's the progress per child that we want to track and not the absolute performance.
So shouldn't we be giving marks for how much a child has improved on the Simple Evaluation Metric (SEM) between the last assignment (the slope of the gradient) and the current one ? Larger the improvement greater the n, e, s score.
The marks should say - you have improved n, on neatness; e, on English; and s, on Subject understanding - between the last assignment and the current assignment !.
- So a good teacher is one whose class has high average <n>, <e> and <s>, averaged over all the students over one academic year
- A good school is where average <n>, <e> and <s> is high for all students, all classes.