type of assessment

What type of assessment tool is the common european framework of reference of language? and what are the issues that arise from using such framework?

Is this an assignment question?

Its part of an assignment. I have to assess student journals using different assessment tools. In order for me to do I am trying to fully understand the different assessment tools in order to assess these journals properly.

Try buying Damien Cooper`s book, Thinking about ASsessment.