Most subjects are. 2017 was the first year of subjects going to 9-1, and that was English Language, English Literature, and Maths. In 2018, more subjects went to 9-1, like Geography and History and the languages. 2019 is the last year of subjects finally going to 9-1. For example, the first exam for BS 9-1 is in 2019, so Business has still not gone to 9-1 yet.