Rhode Island is committed to ensuring that all educators receive fair, accurate, and meaningful educator evaluations that provide information that can help all support professionals improve and refine their practice. This document describes the process and basic requirements for the Rhode Island Model Support Professional Evaluation and Support System (Rhode Island Model), one of two approved models. Through this model, the hope is to help create a culture where all support professionals have a clear understanding of what defines excellence in their work; receive prioritized, specific, and actionable feedback about their performance; and receive support to continuously improve their effectiveness, regardless of the number of years they have been working. In the guidebook, aspects of the model that local education agencies (LEAs) can customize as Flexibility Factors are clearly separated and labeled. Throughout the guidebook, corresponding resources available on the RIDE website are indicated. These resources aim to help educators understand how to best implement various aspects of the Rhode Island Model. Resources include online training modules, sample Student Learning/Outcome Objectives, and a suite of calibration protocols designed to help school and LEA leaders facilitate ongoing calibration exercises. The Rhode Island Model Support Professional Evaluation and Support System should be used to evaluate library media specialists, school nurse teachers, reading specialists/consultants, mathematics specialists/consultants, English as a second language specialists/consultants, instructional leaders, school counselors, school psychologists, speech language pathologists, and school social workers. For individuals who spend time instructing students, the second of the two approved models, the Teacher Evaluation and Support System, may be a better fit. [For Edition II, see ED561963.]