Foreign aid plays a critical role in supporting education systems in developing countries, yet its effectiveness varies depending on the presence and interaction of key implementation components. This study applies the Aid Impact Theory (AIT) to comparatively analyze the USAID Partnership for Education: Learning and the World Bank-funded Secondary Education Improvement Project (SEIP) in Ghana, assessing their effectiveness and sustainability. Using a structured framework, the research examines six essential components: stakeholder consultation, donor coordination and local implementer collaboration, awareness of cultural, political, and institutional contexts, community involvement, capacity building, and monitoring and evaluation. The findings indicate that the USAID Learning project achieved strong synergy among these components, leading to measurable improvements in literacy and institutional strengthening. Conversely, SEIP faced implementation challenges due to lack of donor and local implementer collaboration, weak stakeholder engagement, community involvement, and weak monitoring mechanisms, limiting its long-term impact. The study reinforces the central hypothesis that foreign aid in education is most effective when these components interact synergistically across all stages of the aid lifecycle. Policy recommendations are provided to enhance future education aid interventions by ensuring comprehensive integration of Aid Impact Theory principles.