In a letter to Singh, Alvi said the four-year undergraduate course was being hurried through for its introduction from this year.
"A major change which is going to affect without being debated in a transparent and democratic manner. Impression is being given through media that all teachers were involved, on the contrary the reality is that a task force formed by Vice- Chancellor is instrumental in bringing all illogical changes.
Alvi said there should be an impartial enquiry into the probable benefit to private universities due to introduction of the new four-year system.
The Rajya Sabha MP appealed to the Prime Minister to defer the four-year degree course, saying most parents would not be in a position to "waste huge money and extra one year of their beloved sons and daughters".
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DU Vice-Chancellor Dinesh Singh had also recently claimed that the initiative has been getting due support from students as well as university faculty and it was taken after two years of research and consultation with various stakeholders.
Several political leaders, including Sitaram Yechury (CPI (M), O P Kohli (BJP), Agatha and P A Sangma (NCP), Mani Shankar Aiyar (Congress) and Prem Gupta (RJD), have earlier raised their voice against the introduction of the new system.
The new system, which is being watched closely by other universities, seeks to introduce interdisciplinary pedagogy, enhance the quality of education and impart employable skills.
The proposal has given rise to apprehension among students who come from across the country to seek admission in DU about the duration of the post graduate level course.