Dear Surabhi, Diploma in English is a 1 year course for those candidates who want to learn the different aspects of Englosh language and help students improve their writing, reading and vocabulary skills. The eligibility criteria is that you should have completed your 10+2 with a minimum aggregate of 50%. There are very few Institutions that offer this course. While few Institutions conduct entrance examination, few Institutions conduct admissions based on the merit in the highest qualifucation. SRM University  Kancheepuram, Mysore University, Noida International University and Cochin University of Science and Technology are few Institutions offering this course.