This document summarizes a study that examined how participation in school reviews, called Cyclical Reviews, influenced school principals in building their evaluation capacity. The study compared two groups of principals: Group 1 participated in designing reviews and leading reviews of their own schools, while Group 2 only served as members on other principals' reviews. The study found Group 1 experienced deeper, "double-loop" learning that embedded new practices in school culture, while Group 2 experienced more surface-level, "single-loop" learning. The study proposes a model showing how context, human, and evaluation factors interact over time to differently influence the two groups' evaluation strategies, skills, and assumptions through single-loop or double-loop learning.