gustafn
committed
on 03 Jan
Added support for user-supplied grading schemes

Grading schemes provide a means to map achieved percentages to a numeric grade.
In the curr… Show more
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

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