Singh who completed his six months of extension period, on 8 September did not leave office even after receiving the letter. As a result, there was confusion at IIM-L campus for almost a week. The allegations against Devi Singh, who served two term as director of IIM-L, ranges from nepotism to mismanagement of accounts. The Central Vigilance Commission also asked the HRD ministry to 're investigate' allegations of corruption against Devi Singh. In a letter to the higher education secretary, CVC secretary KS Ramasubban has asked the ministry as to why the case against Singh is being closed when specific allegations have not been answered. The CVC has taken exception to the fact that the case is being closed on the basis of an "emotional reply" by Singh. CVC sources said the ministry had taken Singh's reply as final. "Without investigation how can general comments be taken as the final word?" a CVC official asked. CVC sources also said that the institute's Board of Governors had rejected allegations against Singh. "This is not how an investigation is conducted," the CVC official said, adding that the HRD ministry was to be blamed for not following the procedure. Academics IIM Lucknow conducts regular two-year diploma program in management, one-year MBA program for Executives (fully residential), Two year MBA program for working executives (partly residential), fellowship program and short-term MDP and executive programs. The management programmes of IIM Lucknow are accredited by London-based AMBA association. Post graduate education Structure IIM Lucknow offers master's degrees. The postgraduate programmes in Management (MBA), Agribusiness Management (MBA-ABM), and Sustainable Management (MBA-SM) are full-time residential masters courses. These are two-year programs, with the first year stretching from June to March in three ten-week trimesters, after which students undergo a two-month summer internship with a company or organisation. The specialisations offered in the second year are finance, marketing, operations, human resources, systems, strategy and economics — while the PGPABM course students specialise in agribusiness. Course of independent study and dissertation are available based on merit. As a part of student exchange programs, students spend a three-month term in a foreign university in October to December in their second year. Every year around 85-90 students of IIM Lucknow are selected for the exchange programs based on merit, while around 30+ foreign students come to IIM Lucknow. IIM Lucknow has student exchange relationships with 24 leading B-schools in Europe, USA, Canada,