I joined AP classes in senior year only because i just moved to USA in junior. I won economic championship in my home country (regional champion in OSN Jakarta Utara 2019). Feel free to include my background as a non-english speaker (i just moved to USA at May 2019) and my parents immigration if you feel it important.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.