In order to assure student health and safety, animals are not allowed on school property, except in the case of a service animal accompanying a student or other individual with a disability. This rule prohibiting animals on school property may be temporarily waived by the building principal in the case of a unique educational opportunity for students, provided that: (a) the animal is appropriately housed, humanely cared for, and properly handled, and (b) students will not be exposed to a dangerous animal or an unhealthy environment.