Constructive feedback from staff or students is always welcome.
Informal comments and suggestions can be made by anyone to the CS3 Course Organiser at any time. The CS3 class elects some Class Representatives, who act as a channel to the Course Organiser on class-wide issues.
More formally, CS3 Staff-Student liaison meetings are held once per term, normally towards the end of term. Items for the agenda are submitted to either the Course Organiser or the Class Representative. Minutes of these meetings will be available on the web.
Complaints can be made confidentially: for example, if you complain to the Course Organiser about a lecturer failing to mark work on time, the Course Organiser will take the matter up with the member of staff without divulging your identity.