This can be done only on graded activities not categories
Initially we had  18 questions with 77 marks

Grade book setup

students’ mark

65/77=84.44%

offset changed to 10

Students’ grade

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Changing Maximum grade while editing the quiz just changes the base proportionally and the offset still remains an absolute value added to student’s grade.

There fore, I do not suggest the following

Bonus question Initial 18 questions 60 marks 17 bonus

Grade book setup

 

Students’ grade

32.73/60=54.55%

S1=50.65/60=84.42%

42.73/60=71.21%

60.65/60=101%

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