"Verbal abuse" means the use of malicious or hostile language by an employee that results in harm to another if the school district has determined that there is sufficient evidence to conclude that an employee engaged in the conduct and that it resulted in the employee leaving a position with the school district. Under RCW 28A.400.301, a district is prohibited from entering into any contract or agreement that has the effect of suppressing information about the abuse by a present or former employee or has the effect of expunging such information from employer files.