Learning material is specially prepared by teams of experts drawn from different Universities specialised Institutions in the area all over the country as well as in-house faculty. This material is scrutinised by the content experts, supervised by the instructors/unit designers and edited by the language experts at IGNOU before they are finally sent for printing. Similarly, audio and video cassettes are produced in consultation with the course writers, in-house faculty and producers. The material is previewed and reviewed by the faculty as well as outside media experts and edited/modified, wherever necessary, before they are finally despatched to the Study Centres and Telecast on Gyan Darshan.