Evaluation models are systematic frameworks used to assess the effectiveness and impact of programs, projects, or policies. They help stakeholders understand how well an initiative is performing by providing structured criteria and methods for measurement. Common evaluation models include the Kirkpatrick Model, which focuses on training effectiveness, and the Logic Model, which outlines the relationship between resources, activities, and outcomes. These models guide evaluators in collecting data, analyzing results, and making informed decisions. By using evaluation models, organizations can identify strengths and weaknesses, improve processes, and demonstrate accountability to funders and the community.