Multi-Tiered System of Support (MTSS) is a layered continuum of academic and behavioral support that meets ALL learners’ needs. 

In a multi-tiered system of instruction and support, teachers provide quality instruction across three tiers that is universally designed, differentiated, culturally and linguistically responsive, and aligned to grade-level content standards. MTSS is a framework that provides equitable access to high-quality, grade-level academic and behavioral instruction and supports for all students.

MTSS emphasizes the principle that all students can learn when:

• All teachers differentiate instruction to enhance learning within a research-based core curriculum.
  
  
• Early access to a multi-tiered system of research-based interventions is provided. 
  
  
• A problem-solving approach that depends on the use of reliable data and the progress monitoring of learners to assess the effects of interventions is used.