Robyn Walter's classes and grades

Flying is required for first-years only, optional for older students.
Compulsory subjects for the first five years:
Transfiguration, Defence Against the Dark Arts, Charms, Potions, Astronomy, History of Magic, and Herbology
At the end of their second year, students are required to add at least two optional subjects from the list to their syllabus for the start of the third year:
Arithmancy, Study of Ancient Runes, Divination, Care of Magical Creatures, Muggle Studies, Art/Muggle Art, Magical Theory, Muggle Music
Magical Home Economics is an elective and is taught to students fifth year and above
Sixth and seventh year students can also pick more elective subjects: Advanced Arithmancy Studies, Alchemy, Ancient Studies, Apparition, Ghoul Studies
Subject
Taking during year(s)
Current grades
OWLs
Comment
Flying
1
Dreadful
D
Astronomy
1-5
Exceeds Expectations
E
Exceeds Expectations
E
Charms
1-6
Outstanding
O
Outstanding
O
Defence Against the Dark Arts
1-5
Exceeds Expectations
E
Exceeds Expectations
E
Herbology
1-6
Acceptable
A
Exceeds Expectations
E

Current grades are lower than OWL exam only because you don't have to actually grow anything on your OWL exam.

History of Magic
1-5
Poor
P
Poor
P
Potions
1-6
Outstanding
O
Outstanding
O
Transfiguration
1-6
Exceeds Expectations
E
Exceeds Expectations
E
Arithmancy
0
Art/Muggle Art
0
Care of Magical Creatures
3-6
Exceeds Expectations
E
Outstanding
O
Divination
3
Acceptable
A
Magical Theory
0
Muggle Music
0
Muggle Studies
0
Study of Ancient Runes
0
Magical Home Economics
0
Advanced Arithmancy Studies
0
Alchemy
6
Outstanding
O
Ancient Studies
0
Apparition
0
Ghoul Studies
0