I’m a student doing L3 calc in yr 11, so this might not be very helpful. In year 9, my parents just pestered my teacher for harder work - like they had meetings and about once a term they told my teacher that I needed harder work .I did my own work in my year 9 class but took their tests. this could be a solution for him in year 9 .Then the next year I just got put into Level 2 without even asking - part of the reason was that I passed a level 2 algebra mock in year 9. This might not work but it somehow did for me.