The superintendent of public instruction may not impose through the accreditation process any penalties or sanctions on a school district for employing a superintendent jointly with one or more other districts. The superintendent may not require, through the accreditation process, that an employee of a school district having fewer than one hundred students in high school spend more than thirty-three percent of the employee’s time performing the duties of a school principal if the school district employs a superintendent jointly with one or more other districts.