I'm currently revising for my IAL in January for English lit but I don't understand the grade boundaries. I'm doing unit 2 drama (Othello and A Streetcar Named Desire) and I can't understand why when I check the grade boundaries (2022 boundaries) there is no grade boundary for an A*. Can someone explain why? Is the highest grade I can achieve for Unit 2 an A? And also why can I only achieve A*s for Units 3 and 4?