Does the answer above mean that some students are prevented from achieving higher grades?
No. Students who demonstrate the mathematical abilities required to achieve a higher grade should always be encouraged to do so by a teaching and learning program that includes the knowledge, skills and understanding in the more demanding pathways. The Mathematics education community preferred the single scale as it allows students to aim high and have their achievement reported. Schools now have the flexibility to move students from pathway to pathway and so make and revise grade decisions right up to the end of Year 10.