One of the anticipated results of the wider adoption and use of the National Standards and Benchmarks for Effective Catholic Schools (NSBECS) has been the call for different tools aligned to the NSBECS. Multiple (arch)dioceses and schools have endeavored to construct such tools for their own use. In the state of Wisconsin, the Catholic Conference has aligned their entire accreditation process with the NSBECS in a effort to guide Catholic schools towards excellence in all areas of school self-understanding, programming, and management. In 2016 Dr. Kathleen Cepelka, superintendent of Catholic schools for the Archdiocese of Milwaukee created a task force of principals and other school leaders under the direction of Associate Superintendent Susan Nelson to craft a Teachers' Evaluation Framework based upon the NSBECS and the other best practices on teacher evaluation currently in use. Dr. Cepelka encouraged school leaders and others in the field of leadership evaluation to create a similar tool/framework for principal evaluation. The tool is the result of wide consultation and a deep reading of the NSBECS and other literature on job evaluation in both Church and secular circles. This article describes the construction of the "Principal Evaluation Protocol" with a particular emphasis on the utilization of the NSBECS as the guiding document in the process.