I have been teaching writing for a while and at another school where we have department finals. For higher levels instead of giving a ton of comments and feedback, I focus on a Top 3. These are three areas I feel are most important for improvement. Students must improve for their revision and then highlight/bold. After they turn it in, examine and provide additional feedback. If students can focus on certain areas, teachers will see improvement in those areas.
Directions
1) Give a writing exam.
2) Examine each student final and write a top 3 for them to focus on corrections.
Optional*
3) Have a meeting (individual conference) and go over there top 3 with each student.
4) Assign homework for them to correct it with highlighting or bolding the changes.
5) Provide feedback based on corrections.