The Exam Invigilator is responsible for ensuring exams are conducted in a fair, secure, and orderly manner. Duties include preparing the exam room, verifying student identities, explaining rules, monitoring students during the exam to prevent cheating, managing time, and collecting exam papers at the end. The invigilator must maintain exam security, handle any issues or incidents, and report any irregularities. Professionalism and adherence to school and exam board guidelines are essential.