ContentThis focuses on how well the candidate has fulfilled the task, in other words, if they have done what they were asked to do.
Communicative Achievement
This focuses on how appropriate the writing is for the task, and whether the candidate has used the appropriate register.
Organisation
This focuses on the way the candidate puts together the piece of writing, in other words, if it is logical and ordered.
Language
This focuses on vocabulary and grammar. It includes the range of language as well as how accurate it is.