To be eligible for a Diploma degree at Narayana Group Of Institutes, Tadipatri, candidates must have completed their 10+2 education from a recognized board or university. In addition, they must have obtained a minimum aggregate score of 50% in their qualifying examination. Candidates are also required to clear any entrance exams or interviews conducted by the institute as part of the admission process. Previous academic performance, extracurricular activities, and relevant work experience may also be taken into consideration during the selection process. Additionally, candidates must meet any other specific eligibility criteria set by the institute for the particular Diploma program they are applying for.