Single view
From MoodleDocs
New feature
in Moodle 2.9!
Single view allows a course teacher to view either all the grades of one single student (1 below) or a single grade item for all students (2 below):
Single view may also be accessed from Course>Grade administration>Single view, from where the teacher is presented with a dropdown menu to select either a grade item or a student. Grades may be excluded from here, or overridden and modified.