my advice to you would be to just not give a shit and have as much fun as you can while your in highschool. i had a slim chance of getting into high prestige uni's when i graduated highschool cuz i did so poorly. got such a high gpa once i started college that i can nearly join any uni i want. highschool isnt as important as they make you think, just have fun, pass with required credits, and get "ok" grades