When marking up a test, here is what the colors mean:
* Green = Part of the correct answer and darkened by the student
* Red = NOT part of the correct answer and darkened by the student
* Orange = Part of the correct answer and NOT darkened by the student
* Blue = Not part of the quiz (no key defined) and darkened by the student.
* Red X on the question number = The student response is not correct
* Green C on the question number = The student response is correct
* Purple P on the question number = The student received partial credit-- a positive value less than the primary point value
NOTE: You can disable giving the students the correct answers by pressing 'settings' under the 'menu' page. Disable 'Show Corrected Answers'