Steve,
Is the Association incorporated?
If it is, it's likely incorporated as a non-profit corporation and thereby must comply with
SOUTH CAROLINA NONPROFIT CORPORATION ACT SECTION 33-31-805 of that law specifies [emphasis added]:
(a) The articles or bylaws may specify the terms of directors. Except for designated or appointed directors, the terms of directors may not exceed five years.
In the absence of a term specified in the articles or bylaws, the term of each director is one year. Directors may be elected for successive terms.
Therefore, per SC Corporate law, applicable if Association is incorporated, it will depend on the language in your Bylaws at the time the vote is taken. If there is no language, the term
must be one year.
Once the membership amends the Bylaws, then the terms may be staggered.