Which of the following is NOT a grade eligible for FBLA membership?

FBLA membership is specifically designed for students in middle and high school, typically targeting grades 5 through 12. Therefore, grade 4 does not fall within the eligibility range for FBLA membership, as it is primarily focused on students who are preparing for business education in a more advanced academic setting.

This structure ensures that members have a foundational understanding of the themes and skills emphasized by FBLA, such as leadership, entrepreneurship, and business management, which are generally not taught at the fourth-grade level. Hence, grade 4 is the correct choice for not being eligible for membership in FBLA.