Can we give ranges of 5% when marking as a percentage?
I see ranges of 10% which is a little too coarse. On page 6 of our spec. you will find an image of 'number of scripts' against 'scores' from our existing, offline, CMA system. You will see that this is in 5% tanges and we are trying to emulate that as closely as possible.
All our summative iCMAs will be scored out of 100.

With a test with scores in the range 0-9 I did get ranges of 0-0.5, 0.5-1 etc. so 18 in all. But I can't get 0-5%, 5%-10% etc. when marking as a percentage.

Also the name of the graph can be simplified to 'Number of Students Achieving Grade Ranges'.

JIRA says that Jamie is the Assignee. Here's where we find out.