(1) The assignment of teachers and service personnel to extracurricular assignments shall be made only by mutual agreement of the employee and the superintendent, or designated representative, subject to board approval. Extracurricular duties shall mean, but not be limited to, any activities that occur at times other than regularly scheduled working hours, which include the instructing, coaching, chaperoning, escorting, providing support services or caring for the needs of students, and which occur on a regularly scheduled basis: Provided, That all school service personnel assignments shall be considered extracurricular assignments, except such assignments as are considered either regular positions, as provided by section eight of this article, or extra-duty assignments, as provided by section eight-b of this article.