1. GCSEs in England are being reformed and will be graded with a new scale from 9 to 1, with 9 being the highest grade
2. New GCSE content will be more challenging
3. Fewer grade 9s will be awarded than A*s
4. English language, English literature and maths will be the first to be graded from 9 to 1 in 2017
5. Another 20 subjects will have 9 to 1 grading in 2018, with most others following in 2019. During this transition, students will receive a mixture of letter and number grades
6. The new grades are being brought in to signal that GCSEs have been reformed and to better differentiate between students of different abilities
7. In the first year each new GCSE subject is introduced, broadly the same proportion of students will get grades 1, 4 and 7 and above as would have got grades, G, C and A and above respectively in the old system
8. Regulators in Wales and Northern Ireland are not introducing the new 9 to 1 grading scale as part of the changes to GCSEs in their jurisdictions
9. Click on the image above to see how the 9 to 1 grades compare with the A* to G scale

For further information, the government website serves as a useful resource – Requirements & Guidance