The National Numeracy Strategy in England: a success story in primary mathematics
Mathematical education in England is often framed in terms of challenges. Yet, when we look closely at the evidence, primary school maths tells a different story, one of sustained improvement, system-wide reform, and lessons that remain highly relevant today.
Over the past three decades, the Trends in Mathematics and Science Study (TIMSS) shows that the attainment of primary-aged pupils in England has moved from below the international average to well above it. England’s performance is now consistently among the top-performing education systems internationally. This shift did not happen by chance. It followed a period of deliberate, coordinated reform, most notably the introduction of the National Numeracy Strategy (NNS) in 1998. In a new open-access , Professor Andy Noyes and I revisit the NNS and explore what made it so effective.
A coherent strategy for system-wide improvement
The NNS was ambitious in both scale and design. It introduced the Numeracy Hour, supported by detailed teaching materials, professional development for teachers and head teachers, and a strong focus on subject leadership within schools. Crucially, it was not simply a set of resources, but a coherent programme aimed at improving teaching quality across the system with strong leadership and political and public support.
The foundations laid by the NNS also helped enable later reforms, including Teaching for Mastery, which continue to shape primary mathematical education today.
Rather than viewing the Strategy purely as a historical policy initiative, the paper examines it through three complementary lenses: Kingdon’s Multiple Streams Framework, Wenger’s Community of Practice theory, and the emerging discipline of implementation science. Together, these perspectives help explain how the NNS aligned political will, professional learning, and practical classroom support — and why this alignment mattered for successful system-wide change.
What we can learn for secondary mathematics
This success story is only part of the picture. The large gains seen in primary have not been sustained into secondary mathematics. Elsewhere, my has demonstrated that Key Stage 3 students’ understandings of the core ideas underlying algebra and multiplicative reasoning are worse than in the 1970s. As a result, a substantial proportion of young people still do not reach grade 4 in GCSE mathematics, widely regarded as the expected standard at age 16. Participation in advanced mathematics also remains uneven, with students from disadvantaged backgrounds significantly less likely to continue studying mathematics beyond the compulsory phase.
These persistent challenges raise an important question: if England has previously achieved large-scale improvement in primary mathematical education, what can we learn from that experience now?
One implication from our analysis is that successful reform depends not only on identifying effective interventions, but also on how those interventions are implemented and scaled. This challenge is arguably greater today than it was in the late 1990s. The education system in England is now more fragmented, with increased school autonomy and a wider range of organisations influencing practice. This makes system-wide change more difficult, but also more important to understand.
Building the evidence for system-wide change
This is where the Observatory for Mathematical Education’s work is focused. Our programme of research aims to better understand how improvement happens within a school-led system, how effective approaches can be scaled, and how policy, professional learning, and classroom practice can be aligned. By following an unprecedented 50,000 learners, teachers, subject leaders, and parents/guardians in England for up to seven years within 174 primary schools, 148 secondary schools, and 41 sixth form colleges, we can build evidence about implementation. This aims to support system-wide improvement in mathematical education.
The story of the National Numeracy Strategy shows that sustained, system-wide progress is possible. England’s rise in primary attainment was the result of coordinated action, strong professional support, and careful attention to implementation. As we seek to address ongoing challenges in secondary attainment and participation, these lessons are more relevant than ever.
Understanding what worked in the past is not an exercise in nostalgia. It is a guide for future reform.
Author information
Professor Jeremy Hodgen is an Associate Director at the Observatory.
Observatory for Mathematical Education team