To be eligible for the Diploma degree at Gopsai Avinandan Sangha Primary Teachers' Training Institute Midnapore, candidates must meet certain criteria. Firstly, applicants should have completed their higher secondary education or its equivalent from a recognized board or university. Secondly, they should have obtained a minimum aggregate score of 50% in their qualifying examination. Additionally, candidates must have studied English as a compulsory subject during their higher secondary education. It is also essential for applicants to meet the age requirement set by the institute. Overall, fulfilling these eligibility criteria is crucial for aspiring candidates to pursue a Diploma degree at Gopsai Avinandan Sangha Primary Teachers' Training Institute Midnapore.