Feel free to alter the system or change it entirely, but this is what I do:
Seperate the post into the six subjects we teach. Read over each RP post in placement looking for mistakes in those categories, with a scale ranking starting at 9. For any mistake in a category, deduct .5 points. More or less points may be deducted if you think such is appropriate. For every paragraph the person has (don't try to count five sentences to find a paragraph. If they can't be decent enough to make paragraphs instead of huge blocks of text, you might as well deduct points), add .1 points.
For some categories such as characterization it may be difficult to follow this, so you should follow a 1-9 opinionated scale at these times (when the above method can't be used), 1 being poor in the subject and 9 being excellent.
To find the final score, average the scores from each category.
Also:
0 - 3: Beginner
4 - 6: Intermediate
7 - 8.5: Advanced
8.6 - 9: Don't have to take / Advanced
