This chapter provides a brief history of the multidisciplinary process and how it has evolved over time. A rationale for why the process has changed is provided and how involving more professionals to obtain more specific assessment data and provide more direct input aids in the development of the student's individualized education program (IEP). In addition, a discussion on the incorporation of more reliable and accurate data directly from these individuals shows that a more educationally relevant IEP can be developed for students so that there is a better opportunity for academic success in the school. Incorporating more professionals, when possible, however, requires more planning, but ultimately this process will provide more accurate and reliable data to aid the process for the student, family, and teachers, and everyone will feel more a part of the process. [For the complete volume, "Interdisciplinary Connections to Special Education: Important Aspects to Consider. Advances in Special Education. Volume 30, Part A," see ED607403.]