Early childhood education is often treated as secondary during humanitarian response, yet the first years of life are the period in which conflict, displacement, poverty, and disrupted caregiving can have especially durable effects on learning and wellbeing. This paper develops a community-based early childhood education framework for advancing Sustainable Development Goal (SDG) Target 4.2 in crisis-affected rural Cameroon, with particular attention to the North West Region and Boyo Division, using the community-development organization Goodness and Mercy Missions (GMM) as an illustrative case. Building from a strategic problem-solving logic used in the ECDEiE landscape literature, the paper synthesizes evidence on early childhood development and education in emergencies, implementation research in humanitarian settings, and culturally responsive early childhood learning in Cameroon. The proposed framework argues that SDG 4.2 cannot be advanced in rural crisis settings through classroom expansion alone. It requires a locally governed delivery system that combines community needs assessment, caregiver engagement, local-language play-based learning, psychosocial support, facilitator training, low-cost learning materials, referral linkages, and simple monitoring routines. The paper presents three figures and five operational tables to translate the evidence base into an implementable model for GMM and comparable civil society partners. The central recommendation is to position community participation not as an outreach activity after program design, but as the organizing principle for curriculum, delivery, monitoring, and sustainability.