The Great Plains PHTC requires a rigorous evaluation plan for continuous quality improvement. Evaluation is a major component of the Great Plains PHTC. The Public Policy Center (PPC) at the University of Nebraska Lincoln is the lead evaluator. The PPC employs a participatory program evaluation approach, which is particularly useful for evaluating projects that are collaborative in nature.  A rigorous evaluation of this type allows the Great Plains PHTC the opportunity to enhance its offerings each year.