(a) This chapter does not require a school board to conduct an open meeting to deliberate in a case:
(1) involving discipline of a public school child; or
(2) in which a complaint or charge is brought against an employee of the school district by another employee and the complaint or charge directly results in a need for a hearing.
(b) Subsection (a) does not apply if an open hearing is requested in writing by a parent or guardian of the child or by the employee against whom the complaint or charge is brought.