For those that are interested in scoring for ECE exams there is a document called: Excelsior College Exam Tecnhical Handbook 2005. I tried to attached but IC limits prohibited it. It is located under the publications section. I happened upon it by pure chance. It lists all exams and grading criteria.
IE Abnormal Psychology:

Grade- Cut Score- % Form F- % Form G-
A- 62- 14%- 20%-
B- 54- 30%- 35%-
C- 45- 29%- 25%-

Also contains information on the two different exams Forms F and G thought Im sure you probably dont know which one your getting. Additionally, if you look you will see the percentage of A's B's and C's differ depending on the form you get. It also includes additional data such as Mean Item Difficulty, Mean Item-Total Correlation (point-biserial) and internal consistancy data, if those items actually mean anything to anyone. Hope this helps.

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Completed
Bachelor of Science Liberal Arts, Excelsior College
Magna Cum Laude, GPA: 3.88
Associates of Science Computer Technology, Excelsior College
Highest Honors GPA: 3.95
Planned:
MBA St Leo University Aug 08.