Implementation science is an important and underrepresented topic in the literature of educational research, despite the fact that it is inextricably tied to education policy and improvement. Implementation fidelity (the degree to which a program or intervention is delivered as planned) is, in particular, a key issue for every program developer and researcher designing, executing, interpreting, or communicating their work. Implementation Fidelity in Education Research provides the first serious developer-evaluator collaborative perspective on the practical considerations of implementation...