As an educational consultant evaluator, you should adhere to the professional standards and best practices of the evaluation field. These include the Joint Committee on Standards for Educational Evaluation (JCSEE) standards, the American Evaluation Association (AEA) guiding principles, and the Program Evaluation Standards (PES). These standards and principles cover aspects such as utility, feasibility, propriety, accuracy, evaluation accountability, systematic inquiry, competence, integrity, respect, and responsibility. By following these standards and practices, you can ensure that your evaluation is high-quality, ethical, and relevant.