On midstream merit
Posted by Bella on April 18, 2003
In Reply to: On midstream merit posted by celia on April 14, 2003
I am afraid I can only guess that it means "judged by one's performance so far", thinking along the lines of a review done before a job has finished; in school, a sort of mid-term exam.
If you could give the sense of the reference, the entire sentence, it might help.