Grades are permanent

[maldimare]

Teachers put student grades in as 0 to let them know they are missing the assignments, and then they are unable to change them when the student turns something in.

If a teacher enters the grade incorrectly, there is no way to fix it, the grade is permanent!

I don't know if this is intentional, but if it is, this is not a good choice for an SIS that works with K12 schools.