The Program Evaluation Propriety Standards are intended to ensure that an evaluation is conducted legally, ethically, and with due regard for the welfare of those involved in the evaluation, as well as those affected by its results.
Yarbrough, D. B., Shulha, L. M., Hopson, R. K., and Caruthers, F. A. (2011). The program evaluation standards: A guide for evaluators and evaluation users (3rd ed.). Thousand Oaks, CA: Sage.