I have also written a new Moodle module, exam, based on
the quiz standard module.
Creates Moodle quizzes that students cannot answer. Only view them
after they have been "answered" by the teachers.
When the XML version of the exam is imported into Moodle, the
questions are added to the standard questions database.
The XML exam is also imported into the exam module, leaving it ready
to be graded by the teachers.
The teacher selects the student to evaluate, from a list of participants,
copies the multiple-choice answers, and writes down a grade and
comments for the problems.
Once the answers are copied, the final grade is computed
automatically and the student can see the result, as if it had
been answered by him in Moodle.