I believe it is crusial that the SENDCo include end-of-term comments in reports of students with SEN. This will comprise mostly feedback on targets set for the students at the beginning of the term and other progress observed over the course of the term.
In my school, we have a seperate report that is sent home because the report format is being modified to accomodate report from SEN Department. I just joined the school and it is an area I am working on. Hope this response helps.