Which level is NOT included in the HOSA structure?

In the HOSA organizational structure, there are various levels that serve to support and promote health science education at different tiers. Among these levels, local chapters, chartered associations, and national levels are well-defined components that contribute to the overall mission of HOSA. However, the term referred to as "HOSA organization" does not designate a specific hierarchical level within the established framework.

The local level refers to individual chapters at schools or colleges that participate in HOSA activities. The chartered level denotes state associations that oversee multiple local chapters within a given state. The national level is where these state associations come together under a unified structure to fulfill HOSA's objectives on a broader scale. Thus, "HOSA organization" does not represent a recognized level within this hierarchy, making it the correct choice, as it lacks the specificity of a local, chartered, or national level.