Added support for user-supplied grading schemes
Grading schemes provide a means to map achieved percentages to a numeric grade.
In the current versions, a fixed number of 5 grades is supported.
A grading scheme consists of a grounding scheme and grading boundaries.
- A grading scheme can be selected at exam definition time
- Lecturers can define their own grading schemes and reuse these between exams
- Available grounding schemes:
* no rounding (recommended for small exams, e.g. 5 minutes or 2 points)
* by percent (the calculated percentages are rounded to the provided number of digits)
* by points (the calculated points are rounded to the provided number of digits)
- The grounding precision can be defined by the user (e.g. to 2 digits)
- The grading boundaries represent percentages boundaries necessary for a certain grade
- When selecting no grading scheme, no grading information is provided in the exam protocol
(just percentages)
More changes:
- allow grading also, when student has not submitted the exam
- added percentage information in the grading-box (esp. useful for composite questions)
- renamed predefined grading schemes to more neutral terms
- provide easy-to-type names for question-manager, answer-manager and form-loader
- new utility for more robust list-comparions
- defined validating form-field type for grading boundaries
