Capabilities/moodle/grade:edit

From MoodleDocs

Moodle1.9

• This allows a user to turn editing on/off in the Grader report in order to edit grades directly or to hide or lock individual grades.
• This capability is allowed for the default role of teacher and is not set for the default role of non-editing teacher.
• If not set, a user may still hide or lock Grade items via the edit categories and items page.

See also

• mod/assignment:grade which allows a user to grade assignments via the assignments interface