A certificate can be divided into postgraduate and sub-degree levels. A postgraduate certificate provides a focused academic study in a discipline. It is a short, coherent programme in a specialised area and qualifies participants for further postgraduate study in the field, such as a postgraduate diploma, a master's programme or a doctoral programme. A certificate at sub-degree level can be divided into a foundation certificate, certificate and advanced certificate. These offer secondary school leavers the chance to continue studying up to degree level. Students can move on to relevant diploma programmes after completing the certificate. Generic skills such as languages and computer literacy are also taught. Entrance requirements tend to be open. A certificate course takes about 100 to 200 hours.