Scientists from a variety of disciplines have recognized social capital as a valuable resource in Vietnam since the early 2000s; nevertheless, this kind of capital can only exist when it is observable and the benefits of social capital can be quantified (Uphoff & Wijayaratna, 2000). As seen by the poor engagement in social activities and social media networks, social capital is actually very restricted in Vietnam’s state general education schools. This makes it difficult to raise the standard of instruction and learning objectives. This study aims to investigate the influence of social capital on the advancement of public general education. By analyzing the structural equation model (SEM), the study’s survey method uses a questionnaire with a scale of 488 teachers and employees in public general education. As shown in the result, social capital impacts not only directly and positively but also indirectly on the development of public general education through intermediary factors such as in-school knowledge transfer, school brand, and training service quality. The study makes several recommendations to increase social capital in order to set the groundwork for the growth of public general education in Vietnamese schools, based on these findings.