To be eligible for the Diploma degree at Mother Theresa Institute of Elementary Teacher Education in Khammam, candidates must have completed their 10+2 or equivalent examination from a recognized board with a minimum aggregate of 50%. Additionally, candidates must have a passion for teaching and a desire to work in the field of elementary education. It is also preferred that candidates have some prior experience working with children or in educational settings. Admission to the program is based on merit and may also include a personal interview to assess the candidate's suitability for the teaching profession.