Texas Civil Practice and Remedies Code - CIV PRAC & REM § 118.001. Definitions

(A) a superintendent or administrator serving as educational leader and chief executive officer of the school, principal or equivalent chief operating officer, teacher, including a substitute teacher, supervisor, social worker, school counselor, nurse, and teacher's aide employed by a public school;

(B) a teacher employed by a company that contracts with a public school to provide the teacher's services to the school;

(C) a student in an education preparation program participating in a field experience or internship;

(D) a school bus driver certified in accordance with standards and qualifications adopted by the Department of Public Safety of the State of Texas;

(E) a member of the board of trustees of an independent school district or a member of the governing body of an open-enrollment charter school;  and

(F) any other person employed by a public school whose employment requires certification and the exercise of discretion.