To reach the goals of outreach and Extension programs, a program planning model is essential. A new model is presented to ensure program success; it is the human development-ecoLogic model (HD-ELM). The HD-ELM components are as follows: HD--human development characteristics and implications for target audience; E--modified ecological systems theory, or the surrounding systems that influence program participants; and LM--revised logic model (objectives, inputs, outputs, outcomes, and program assessment). Users of the HD-ELM can account for missing gaps that prevent programs from being successful by addressing the target audience's developmental characteristics and the surrounding systems in which programs exist.