moodler
55 lines
3.4 KiB
HTML
55 lines
3.4 KiB
HTML
<h1>The Calculation of the Final Grade</h1>
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<p>The table on this screen shows how the final grades for the students
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are calculated. The final grades are a weighted sum of up to five components.</p>
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<ol>
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<li>The teacher's grade for their submitted work. This is optional and will be
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used if the teacher actually assesses the student's work. If the student submits
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more than one piece of work the "best" grade is used. Here, best
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means the piece of work with the highest weighted combination of teacher's
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grade and peer grade...</li>
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<li>The average of the peer grades for their submitted work. Again if the student
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submits more than one piece of work the "best" grade is used. The
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peer grade can optionally
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include the teacher's grade. This grade would be included if the number of
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peer gradings is very low or it is thought that the peer gradings are suspect
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either because of bias (usually on the high side) or for not being reliable.
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If included the teacher's grade is treated in the same way as a peer grade in
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the calculation of the average.</li>
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<li>The student's bias in grading peer work. This is measure of whether the
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student grades work either too high or too low. It is not an absolute measure
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as it is based on the difference between the student's grade and the peer
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averages for each of the submissions they assessed. In general this component
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should NOT be given a high weighting.</li>
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<li>The student's reliability in grading peer work. This is a measure on how well
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a students grades follow the peer average for the pieces of work they
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assessed. The measure discounts the student bias and averages the absolute
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differences between their grades and the peer average grades. In theory if
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the students gives high marks for good pieces of work and low marks for poor
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pieces of work their reliability will be high. If it is suspected that the students in
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general are poor assessors then the teacher's grades should be included into
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the peer averages, this should make the reliability values more meaningful.
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<li>The average grade given by the teacher for the student's assessments.</li>
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This includes both the preliminary assessments made by the student on the
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example pieces of work and any grading the teacher makes on the assessments
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produced during the peer assessment phase of the assignment. In general this
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component is probably more important than both the Bias and Reliability
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components and thus, if available, should be weighted higher.</li>
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</ol>
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<p>These five components can be weighted as deemed appropriate for the
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assignment. For example the teacher's grade might be weighted strongly
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if the peer grading part of the assignment is only considered a minor part
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of the assignment as a whole. Alternatively, if the teacher only grades a few
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of the submissions these grades can be ignored by giving them a zero weighting.
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If the assignment is all about the students as judges and the providing of feedback
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then first two components may be set to zero (or low) and the students'
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grading abilities will determine the final grades.</p>
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<p>Note that this screen is used iteratively and the final grades are not normally
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made available to the students until the final phase of the assignment. Once the
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the teacher is happy with the final grades and their weightings then they can
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be made available to the students.
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</p>
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