Best way to calculate 3 or 4 levels of progress KS2-4 ?
I'm looking at the best way of calculating our KS2-4 levels of progress for targets, I have done a template in the past but it didn't get used and now it's time to create another one. Basically I was thinking a template doing the following.
KS2 points + 12 > conversion to GCSE grade + 6 (or 12) > Marks to grade (GCSE). I thought it best to add the 2 levels at KS3 so the low ability would get onto the conversion scale.
Using the following conversion:
GCSE Grade A* A B C D E F G
Notional level 10 9 8 7 6 5 4 3
I was just after examples of how other people do it, is there an easier way in SIMS? Are my figures completely off ?