This book provides teams with the processes and materials to complete the ELL Critical Data Process for K-12 and preschool students including a data analysis process for districts to better understand their issues. Knowing the critical data to gather, the staff to involve, and having a process to follow will increase the likelihood of appropriate intervention. This resource kit contains resources and guiding documents to help understand whether targeted interventions or a special education referral is the appropriate action for your student. It includes a section, the SLD Mini-Matrix, that focuses on providing more information about students suspected of having learning disabilities. The category of SLD is the most problematic category for disproportionality of language learners. An appendix provides examples of how certain information processed during the ELL Critical Data Process is related to interventions or referral, with examples.