Each school district shall adopt a policy governing the disposition of children attending school within the school district, employees of the school district, or independent contractors under contract with the school district who are diagnosed as having a significant contagious disease. The state department of health shall, with advice from the superintendent of public instruction, adopt rules establishing guidelines for the policy. The guidelines may include methods and procedures relating to a determination of whether and under what conditions a child with a significant contagious disease may not continue attending school or whether and under what conditions an employee or an independent contractor with a significant contagious disease may not continue in a work assignment.