To be eligible for the B.Ed degree program at Tapeshwar Singh Teachers' Training College in Patna, candidates must have a minimum of 50% marks in their Bachelor's degree from a recognized university. Additionally, candidates must have completed their Bachelor's degree in Education (B.El.Ed) or any other related field such as Humanities, Social Sciences, or Sciences. Candidates must also pass the entrance exam conducted by the college and meet any other criteria set by the college or the regulating body. It is important for candidates to have a passion for teaching and a commitment to pursuing a career in the field of education.