The Chemical Hygiene Officer's (CHO) role is absolutely critical in fostering and ensuring both chemical hygiene practices and the chemical hygiene plan. OSHA defines the Chemical Hygiene Officer as an “employee who is designated by the employer, and who is qualified by training or experience, to provide technical guidance in the development and implementation of the provisions of the Chemical Hygiene Plan.” The CHO position is also essential in helping to facilitate the safeguards put in place as part of the chemical hygiene plan to protect both the teacher and students.