School and trust leaders are being asked to raise attainment, close widening gaps and support more pupils with additional needs, all while recruiting and retaining good teachers and working within tight budgets.
The answer isn’t always to do more. It’s to invest where the return is greatest.
That usually means looking at the teaching every pupil receives, every day, before looking at intervention. When resources go mainly towards catch-up and targeted support, it is easy to overlook the most cost-effective lever available: the quality of core classroom teaching.
Why core teaching is the foundation
If universal teaching is unstable, everything built on top of it becomes more expensive.
Many schools will recognise the logic of a tiered approach to support. The Education Endowment Foundation’s pupil premium guidance sets out a similar model: high-quality teaching for all, targeted academic support for some, and wider strategies for particular barriers. The US framework behind this article, Multi-Tiered System of Supports (MTSS), is more formalised, but the principle is the same. Intervention works best when it sits on top of strong teaching for everyone.
When core teaching isn’t meeting pupils’ needs, the pressure shows up quickly. Intervention groups grow, SENCos and intervention leads are stretched across too many pupils, and budgets absorb the cost of escalating support.
When core teaching falters, everything costs more
A weak foundation tends to produce a predictable chain of consequences:
- Rising staffing demand. More pupils need targeted or specialist support, which means more teaching assistants, intervention staff and SEND provision, at a time when recruitment is difficult.
- Growing programme costs. Each layer of intervention brings its own resources, training and licences. The most intensive support costs more per pupil and reaches far fewer of them.
- Lost learning time. When catch-up dominates lessons, pupils who are ready to deepen or extend their learning can disengage, and teachers spend more time backfilling.
- Gaps that widen. Small misconceptions left unaddressed become long-term barriers that take progressively more effort and money to remedy.
- Human and cultural costs. Teachers who spend their days reacting to gaps rather than teaching proactively face greater workload pressure. This affects morale and retention, and it never appears in the budget.
The return on strong core teaching
When core teaching is strengthened, the system shifts from reactive to proactive. Outcomes improve and the long-term cost of support falls.
Strong universal teaching is also a matter of equity. Every pupil benefits from high-quality teaching, not only those identified for additional programmes.
As fewer pupils need targeted support, specialists can focus on those with the greatest need. Caseloads become more manageable, interventions become more effective, and support matches need more closely.
The economics follow the same logic. Skilled whole-class teaching, with purposeful discussion and well-judged adaptation, reaches a whole class at once. Teaching 30 pupils well is a fundamentally different cost-per-outcome equation from remediating a group of them individually later.
Securing foundations early also stops gaps accumulating. Pupils who meet new content with secure prior knowledge are more confident, and schools need less reteaching and less costly intervention later on.
The benefits extend across a school or trust:
- Teachers feel more effective and workload pressure eases
- Pupils build confidence and work more independently
- Parents and carers gain trust in the school
- Leaders spend less time responding to problems and more time planning ahead
The return is not only financial. It is instructional, cultural and long-term.
What effective core teaching looks like
Not all core teaching delivers the same results. Strong provision follows consistent principles across subjects, and these determine whether investment pays off. Teaching that prevents misconceptions costs far less than intervention that has to correct them.
Reading that is explicit and evidence-based. In early reading, this means systematic synthetic phonics taught in a clear, structured sequence, alongside vocabulary, fluency and comprehension. In England, the DfE’s Reading Framework sets out expectations for how schools teach early reading. A dependable progression gives teachers a clear roadmap, while regular checks help them spot gaps early without adding layers of testing.
Maths that builds deep understanding. Strong maths teaching goes beyond memorising facts. It helps pupils understand why mathematical ideas work, not just how to calculate. It combines conceptual understanding with procedural fluency and uses multiple representations so that all pupils can access age-appropriate content. Frequent checks for understanding let teachers address misconceptions quickly, before they need intensive reteaching.
Technology that supports teachers. Technology should strengthen good teaching, not compete with it. Tools such as Reading Eggs and Mathseeds can give teachers real-time data, adaptive learning paths and straightforward progress monitoring. When digital tools take care of routine tasks, teachers have more time for modelling, feedback and the interactions that make the biggest difference.
Together, these elements form a foundation that is rigorous, supportive and adaptable, meeting pupils where they are while moving them towards secure understanding.
Strengthening core teaching without overstretching the budget
Most schools and trusts don’t need more programmes. They need greater coherence, and strengthening core teaching doesn’t require an overhaul or major new spending.
Evaluate before you invest. Many leaders lack a clear picture of how effectively universal teaching is serving pupils, or how much they spend on interventions that better early teaching might prevent. Review your assessment data to see how many pupils are secure without additional support, and calculate the true cost of current intervention in staffing, time and resources. This gives you a baseline, shows where the potential return lies, and helps you justify investment in core teaching.
Think in systems, not silos. Adding one more intervention programme is tempting, but it often fragments teaching and complicates implementation. Favour approaches that work across your provision, fit your existing curriculum and need minimal extra training. Across a trust, this also supports consistency between schools. Coherent systems reduce workload, improve consistency of delivery and ensure each investment strengthens the foundation rather than patching isolated gaps.
Reduce the number of platforms staff juggle. Teachers lose time moving between platforms with different logins, dashboards and approaches. Where it makes sense, choose solutions that cover both reading and maths with aligned pedagogy, shared data and a consistent interface. When staff know one system well, implementation becomes more consistent and more effective. Reading Eggs and Mathseeds are designed with this in mind, with consistent design and integrated reporting, and they can be used for whole-class and small-group teaching.
Be clear about how you fund it. Frame investment in core teaching as prevention rather than “more intervention”. This is easier to justify against your school or trust budget and to link to your pupil premium strategy. The EEF’s guidance on using pupil premium recommends prioritising teaching quality, so a clear link between spending and evidence-informed teaching supports sustainable funding decisions.
When core teaching improves, every layer of support becomes more effective and less costly to run.
Your next step
Strong core teaching is what makes everything else work, including targeted support. When it’s secure, you build a system that supports all pupils more consistently, with less strain on staff, time and budget.
Start where every pupil starts: in the classroom. It is the most effective, and the most cost-effective, place to invest. Prevention costs far less than perpetual catch-up, and it gives every learner a secure foundation for what comes next.
Ready to strengthen your foundations? Download our guide, Get It Right from the Start, to explore evidence-based strategies for building stronger core teaching in the early years of primary.
