Videos cannot be shown without captions and audio descriptions in classes where a student with a registered disability is enrolled. Videos must be checked for captioning/audio-description or an appropriate accessible copy purchased prior to the start of the course. Captioning must be proofed because auto-captioning usually is not sufficient for deaf/hearing impaired students. Further, students who are deaf or hard of hearing must have text descriptions of all video content, not only the dialogue; students who are blind or visually impaired must have audio descriptions of all video content.