~20000 senior students take AMC 12 test and only 5% (~1000) qualify for AIME every year. Is qualifying for AIME considered a top tier EC activity (Tier-A/B/C)?
Extracurriculars are typically activities outside of your academic or school requirements like volunteering, clubs or sports teams and help show admissions your leadership and commitments outside of the classroom. Qualifying for AIME is an exceptional academic achievement and will likely hold a lot of weight in your application but its not considered an EC.
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