teacher

(A) a teacher, instructor, principal, or administrator;

(B) another educational professional who works in a school;

(C) a professional or nonprofessional employee who—

(i) works in a school; and

(ii) (I) in the employee's job, maintains discipline or ensures safety; or

(II) in an emergency, is called on to maintain discipline or ensure safety; or

(D) an individual member of a school board (as distinct from the board).

(A) who is a citizen of the United States or, in the case of a teaching position that involves instruction in the host-nation language, a local national when a citizen of the United States is not reasonably available to provide such instruction,

(B) who is a civilian, and

(C) who is employed in a teaching position described in paragraph (1).