Multi-Tiered Support Systems Offer Blueprint for More Equitable Schools: OECD

The OECD finds that Multi-Tiered Systems of Support (MTSS) can help schools improve learning, behaviour, attendance, and inclusion by identifying student needs early and providing support at increasing levels of intensity. The report highlights MTSS as a promising policy framework for creating more equitable and efficient education systems, but stresses that success depends on strong leadership, data systems, teacher training, and sustained investment.

Schools around the world are facing increasing pressure to support students with diverse learning needs, behavioural difficulties, mental health concerns, and attendance problems. According to a new OECD Education Working Paper, traditional approaches that wait until students struggle before offering help are no longer enough. The report, Tiered Systems of Support in Education: A Focus on MTSS, argues that schools need a more proactive system to identify problems early and provide support before challenges become severe.

Drawing on research from institutions such as the University of Oregon, Vanderbilt University, and the University of Kansas Center for Research on Learning, the report highlights Multi-Tiered Systems of Support (MTSS) as a promising framework for improving educational outcomes and promoting inclusion.

What Is MTSS and How Does It Work?

MTSS is not a curriculum or a specific programme. Instead, it is a framework that helps schools organise academic, behavioural, social-emotional, and attendance-related support. The model is built around three levels of intervention.

The first tier provides high-quality teaching and support for all students. The second tier offers targeted help for students who need additional assistance, often through small-group instruction or specialised programmes. The third tier delivers intensive and individualised support for students facing significant challenges.

A key feature of MTSS is its use of data. Schools regularly monitor student performance, behaviour, attendance, and well-being to identify issues early. Teachers then use this information to decide what support is needed and whether interventions are working. This allows schools to respond quickly rather than waiting for students to fall behind.

Strong Evidence of Better Student Outcomes

The OECD review found growing evidence that MTSS can improve student outcomes when implemented effectively. Studies show positive impacts on reading achievement, especially among students at risk of learning difficulties. Schools using behavioural support systems within MTSS have also reported fewer disciplinary incidents, suspensions, and classroom disruptions.

The framework is increasingly being used to address chronic absenteeism as well. Attendance-focused models help schools identify students at risk of disengagement and provide targeted support before absence becomes a long-term problem. Research suggests that combining academic, behavioural, and attendance supports within a single system can yield stronger results than addressing each issue separately.

Why Policymakers Are Paying Attention

For policymakers, MTSS offers more than a school improvement strategy. It provides a practical way to make education systems more efficient and equitable. By identifying challenges early, schools can prevent problems from becoming more serious and costly to address later. This can reduce the need for expensive remedial programmes, lower dropout rates, and improve overall student success.

The framework is also seen as a tool for narrowing achievement gaps. Regular monitoring helps schools identify students who may otherwise be overlooked, including learners with disabilities, students from disadvantaged backgrounds, migrants, and multilingual learners. By ensuring support is provided according to need, MTSS can help create fairer education systems.

Another important policy benefit is greater coordination. Many education systems operate separate programmes for literacy, behaviour, attendance, mental health, and inclusion. MTSS brings these efforts together under one framework, helping schools reduce duplication and use resources more effectively.

Implementation Remains the Biggest Challenge

Despite its potential, the OECD warns that MTSS is not a simple or low-cost reform. Success depends heavily on implementation quality. Schools need trained teachers, strong leadership, reliable data systems, specialist support staff, and ongoing professional development. Without these conditions, the framework may fail to deliver its intended benefits.

Countries including Australia, Canada, Portugal, New Zealand, Ireland, and the United States have already adopted versions of tiered support systems, while others are exploring similar approaches. Although implementation differs across countries, the OECD concludes that the underlying principle remains the same: providing the right support at the right time.

The report's central message is clear. As education systems face growing demands, the future of student support may lie not in creating more programmes, but in organising existing resources more effectively. By shifting the focus from reacting to problems to preventing them, MTSS offers a pathway towards more inclusive, responsive, and equitable schools.