If the court, after a hearing on notice, determines that a certified teacher has violated subsection (3) of this section, it shall order the termination of his or her employment by the public school district. No person knowingly violating the provision of said subsection may, subsequent to such violation, be employed or reemployed as a teacher by any public school district in the state unless the court first finds a public necessity therefor. The provisions of this subsection (8) shall be cumulative and supplemental to any other applicable provision of law.