Grade 9: explore broadly, protect math. Grade 9 is for trying everything: clubs, sports, arts, volunteering. The only non-negotiable is math — keep it strong because every competitive program gates on it. Join two or three activities you're genuinely curious about, not the ones that look best on paper. Grade 10: go deeper, start the record. By Grade 10, drop the activities that don't stick and go deeper into two or three. This is also the year to start contest history — CEMC math contests and the CCC are entry-level here. Start logging everything in your extracurriculars dashboard, because the multi-year record you build now is what separates applicants later. Grade 11: pick a direction, take the prerequisites. Grade 11 is when direction matters. Narrow to two or three program families, confirm their prerequisite courses, and make sure your Grade 11 course choices feed Grade 12. This is also the year competitive summer programs (Shad, university camps) are within reach — apply. Grade 12: execute, don't invent. By Grade 12 your job is execution: keep your top-six average protected, finish the AIF or supplementary applications, and let the record you built in Grade 9–11 speak for you. Nothing you start in September of Grade 12 will be as strong as something you've done for three years. The Planner here sequences exactly this — courses, goals, and ECs by grade, driven by the majors you're targeting.