This document presents the proceedings of the 23nd Annual Research Forum held June 28, 2018, at Wake Forest University in Winston-Salem, North Carolina. Included are the following 12 action research papers: (1) Standards-Based Grading in a Secondary Mathematics Classroom (Michelle Anderson); (2) How the Use of Graphic Novels in Shakespeare…

Background: Cluster-randomized experiments that assign intact groups such as schools or school districts to treatment conditions are increasingly common in educational research. Such experiments are inherently multilevel designs whose sensitivity (statistical power and precision of estimates) depends on the variance decomposition across levels.…