Is there a way to set up extra credit assignments in such a way that it doesn't seem like students who chose not to do it are being penalized (you'd think that just the fact that it's labeled extra credit would imply that, but both students and parents get concerned when they see "no grade" without looking at the description of the assignment).
This school year I've been using the Google Classroom mark book. For my class I have four categories, each one of them counting as 25% of the final grade. Each assignment in a given category is weighted according to the number of points. The Google Classroom mark book correctly calculates the final grade. I am trialing the GradeBook for Google Sheets, but after importing the same classroom into the gradebook, and setting up the categories, total points etc. the final grade is way lower than it should be. Why?