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Summative evaluation is focused on assessing the outcomes of a program after its completion. This type of evaluation is concerned with the overall effectiveness and impact of the program, measuring whether the intended goals were met and to what extent the program has made a difference. It often includes analyzing data collected from participants and stakeholders to determine the success of the program and provide insights for future initiatives.

In contrast, formative evaluation occurs during the implementation of a program. It is used to improve the program as it is being developed and implemented, focusing on ongoing feedback and adjustments. Process evaluation examines the implementation itself, analyzing how the program was delivered and whether the activities were conducted as planned. Input evaluation looks at the resources, context, and input factors before the program starts, ensuring that everything is in place to support the program effectively. Each of these evaluations plays a crucial role in the program lifecycle, but summative evaluation stands out for assessing the final impacts once the program has concluded.