Tier 3 Student Level Systems support all students who are not responding to Tier 1 and Tier 2 supports and would benefit from intensive strategies matched to individual student needs. Student challenges may include behaviors that range from disruptive behaviors to aggression (externalizing) and/or suicidal ideation, depression, or anxiety (internalizing). These behaviors might be impacted by trauma or crisis situations (temporary or permanent) or driven by mental health needs. Tier 3 behavioral supports may be helpful for any student, no matter the (dis)ability, who needs support to meet intensive social, emotional, and behavioral needs. This guide can assist all educators with understanding the systems that must be established to support students with intensive needs.