The definitions contained in section one, article one, chapter eighteen of this code apply to this chapter. In addition, the following words used in this chapter and in any proceedings pursuant to this chapter have the meanings ascribed to them unless the context clearly indicates a different meaning:
(a) "School personnel" means all personnel employed by a county board whether employed on a regular full-time basis, an hourly basis or otherwise. "School personnel" is comprised of two categories: Professional personnel and service personnel;
(b) "Professional person" or "professional personnel" means those persons or employees who meet the certification requirements of the state, licensing requirements of the state, or both, and includes a professional educator and other professional employee;
(c) "Professional educator" has the same meaning as "teacher" as defined in section one, article one, chapter eighteen of this code. Professional educators are classified as follows:
(1) "Classroom teacher" means a professional educator who has a direct instructional or counseling relationship with students and who spends the majority of his or her time in this capacity;