Final answer:
FFA members can remain active until November 30th following their fourth national convention after high school. The period typically extends for 3 and a half years post-graduation, as long as they are under 23 years old.
Step-by-step explanation:
The question pertains to the duration of membership eligibility in the Future Farmers of America (FFA) organization post-high school. According to FFA rules, a member can remain active in the FFA until November 30th following their fourth national convention after high school graduation.
Therefore, if a student graduates in May, typically, they can continue their active membership for about 3 and a half years post-graduation, contingent on their ongoing engagement with FFA activities and their age not exceeding 23.