The Pacific Southwest Mental Health Technology Transfer Center (MHTTC), in collaboration with the OSEP Technical Assistance Center on Positive Behavioral Interventions and Supports (PBIS), has developed a three-part series of fact sheets to deepen knowledge and understanding of the ISF. All three documents provide case examples that highlight the local context in which data-based decision making occurs and reflect the diversity of school communities in the region.  This particular factsheet describes what will be different for educators and mental health providers when school mental health is integrated into a Multi-Tiered System of Support (MTSS).