Service-Learning in English as a Second Language Teacher Training Programme emphasises the critical role of quality education, aligning with Sustainable Development Goal 4 (SDG4), in shaping a brighter future. This book explores the integration of service-learning in ESL teacher training, presenting a unique fusion of academic study and community engagement. It illustrates, through qualitative data, how pre-service teachers, immersed in practical teaching environments, acquire essential skills in language instruction and adaptability. Highlighting the dual benefits and challenges of service-learning, this work underscores its capacity to foster vital 21st-century competencies like critical thinking, problem-solving, and cultural sensitivity. An invaluable resource, it provides insights into how experiential learning can cultivate empathetic, effective ESL educators ready to tackle the complexities of contemporary classrooms.