Thirteenth grade (original) (raw)

Thirteenth grade, grade thirteen, or super senior year is the final year of secondary school in some jurisdictions. In some locales it is compulsory in order to receive a high school diploma or equivalent. In others, it is not required to receive a high school diploma but may be a prerequisite to enroll in certain post-secondary institutions. Students who complete Grade 13 usually graduate at ages between 18 to 19.