Studies1 have shown that high attendance correlates with better engagement and success on a course. By punctually attending and actively participating in your classes you not only increase your own opportunities for success, but you also help build a learning community with other students. If you are not able to regularly attend classes, you should consult your relevant Course Authority.
You should also carefully read your course outlines before courses commence to ensure that you are familiar with any specific attendance requirements. If you are unable to attend required sessions, you need to inform your relevant Course Authority and if the absence is for medical reasons you will be required to present a medical certificate. If examinations or other forms of assessment have been missed, then you should apply for Special Consideration.