Instructional Research Group is a small educational research institute located in the town of Signal Hill in Long Beach, California. IRG conducts rigorous research on instruction and professional development, with a particular focus on improving the quality of instruction to students with disabilities and students who are English-language learners. We also develop and evaluate curricula and professional development materials.
RG Research Group is a small, privately owned company that specializes in large-scale program evaluation and large-scale field research. The company also specializes in projects involving professional development, and curriculum development and analysis.