What I'm looking for is the ability to place a letter code into the grade field for an individual student's assignment grade. The code lets the students know "why" they have a zero.
For example, when a student checks their grade report and they see a "0", all they know is they have a ZERO for that assignments. But, if a students sees a "M", they know the assignment is a ZERO because the assignment is missing.
So, if Schoology can add a "M" to that list you mentioned in the bubble (I & E) and make it equal "0", that would be GREAT!
It would be even better 'if' Schoology allowed teachers to create their own letter codes (much like the rubrics) and define their own values for use in their own gradebooks.
M (missing) = 0
NS (not shared) = 0
NL (not linked) = 0
etc.... This will let students and teachers know 'why' the student earned a "0".