I have submitted my General Certificate of Education (GCE) Advanced Level results, comprising three passing grades, along with one International General Certificate of Secondary Education (IGCSE) result. My account is currently on hold, pending the submission of two additional IGCSEs. I understood that three A Levels are typically considered equivalent to Canadian high school completion, which is why I initially omitted additional IGCSEs. Could you please clarify why the additional IGCSEs are necessary in this context?