NEW DELHI : IIT Madras, IISc Bangalore and IIT Delhi bagged the top three positions among educational institutions in the country in the HRD Ministry's National Institutional Ranking Framework (NIRF) announced on Thursday.The top 10 higher education institutions in the country included seven Indian Institutes of Technology (IITs).As per the annual rankings, the top three universities are IISc Bangalore, Jawaharlal Nehru University and Banaras Hindu University.IIM Ahmedabad has been ranked as the top B-School in the country, followed by IIM Bangalore and Calcutta.Union HRD Minister Ramesh Pokhriyal 'Nishank' announced that Miranda College bagged the top rank among colleges, followed by Lady Sri Ram College for Women, Hindu College and St.