Grades 7, 4 and 1 will be linked to the current (A*-G) grade scale. This means that, broadly, the same proportion of candidates achieving grades 7, 4 and 1 would have achieved grades A, C and G in the current system.
When the new A*-G grading is introduced, in summer 2019, the Grade A* will be aligned with the Grade 9. The Grade A will cover Grades 8 and 7. The Grade B will align with the Grade 6.
In addition a Grade C* will be introduced and this will align with the Grade 5.