Though 30% seems still pretty doable. I assume you need 50% total not to fail? You could get by without, (or more realistically by concentrating on doing a few pieces of homework with a high percent / effort ratio).
Scoring levels: 100-94: A 93-85: B 84-70: C 65-69: D 64-0: E
D is generally considered unsatisfactory, although you might be able to get away with 1 or 2 here or there.
This is all very foreign to me. When I was in primary school in thr UK 20 years ago we never received a single piece of homework and the only time we got graded was a national standardised test which was positioned as being more about the school than about us.
