Yr 7-10: mostly C's, but JUST passing.
My maths teacher recommended me to do General Maths, my english teachers recommended I do Standard and my religion teacher told me to do catholic studies bc he thought sor would have no hope of counting towards my atar (catholic school so I have to do either sor or catholic studies)
Year 11: ended up choosing extension maths and SOR 2, got first place in both. Chose Advanced English and got 2nd. Most Outstanding Year 11 Scholarship at the end of the year
Year 12: doing 4U, and got College DUX, ATAR est. of 96.2
Don't think you can't turn yourself around, just need a bit of focus and determination