This study investigates the management of professional communication skill training for primary school teachers in Duong Kinh District, Hai Phong City, with the aim of fostering a happier school environment. Utilizing a mixed-methods approach, the research combines quantitative data from structured questionnaires and qualitative insights from interviews and focus groups. The results show that 78% of participants attend communication skill training at least annually, but only 45% of teachers engage in these sessions more frequently, indicating a gap in training regularity. The effectiveness of the training programs varies, with principals and subject heads generally reporting higher effectiveness compared to teachers. Although 72% of respondents recognize a positive impact on the school environment, including improved classroom management and staff relations, 20% find the training to be of limited relevance or impact. Qualitative findings reveal challenges such as limited resources, insufficient time for training, and inconsistent staff commitment. The study identifies the need for more interactive and context-specific training to address these issues. Recommendations for improving training effectiveness include increasing awareness of the importance of communication skills, enhancing needs assessments, setting specific and relevant training goals, improving content and delivery methods, and creating supportive working conditions.