On the Declaration of Rights of Man and Citizen assignment, I gave grades and plus grades (A+, A, B+, B, etc.) Here’s how the grade scale worked out, approximately:
On the test, I gave plus and minus grades (A+, A, A-, B+, B, B-, etc) which translate into a 100 point scale in my gradebook (100, 96, 92, 88, 85, 82, etc., down to 58, 55, 50 for F-level). The high score in the class was 49 out of a possible 49, not counting extra credit, and I used a slightly extended scale for grades (if you’re not sure whether that helped you, just double your raw score to get your percentage score before the adjustment). The median score was C/C+, meaning that about as many people got above a C+ or above as a C or below; the average score was a solid C as well. The extra credit was worth up to 5 points: about a quarter of the people who attempted extra credit got no benefit; over half went up one grade level (B to B+, etc.), about a sixth went up two grade levels (B- to B+, etc.). Here’s how the grade scale worked out:
On a related note, I realized that my grading scale for the previous tests was based more on my experience with essay and short-answer tests than multiple choice tests. I’ve adjusted the grades on previous tests to compensate: B-level grades added a point; C-level grades 2 points; D-level grades 3 points; F-level grades 4 points. So your average may be a little higher than you think.