Are You Designing a Primary Curriculum That Ignores Reason?

Do you ever look at your school’s curriculum map and feel a quiet, guilty thought creep in: this looks less like a plan and more like a buffet of competing trends?

One term, pupils spend six weeks “discovering” the Great Fire of London through drama, baking bread, building cardboard houses and writing a letter from Samuel Pepys. The next term, you’re told to teach “skills for the 21st century”, so the history gets shelved, replaced by generic critical-thinking worksheets that could apply to absolutely any topic and therefore apply to none. The result is a curriculum that moves fast, wears everyone out, and still leaves children with the same patchy knowledge and the same repeated questions by Year 6.

That isn’t an uncommon situation. It’s the product of decades of educational thinking that has embraced feeling, experience and novelty as the starting points for school design, while quietly dropping the idea that reason should be in charge.

This article makes a case for a different way. A way that is increasingly being embraced by curriculum designers and cognitive scientists: rationalism – the principle that knowledge, logic and carefully ordered content ought to drive every teaching decision. Let’s look at why your current curriculum may be undermining your own pupils, why rationalist design principles are now backed by a genuinely robust evidence base, and what you can actually do about it on Monday morning.

If you’re ready to feel less foggy about curriculum, stick with me.

The Mess We Are Actually In

Here is a scenario many primary teachers will recognise. In September, Year 3 “does” the Victorians. In January, Year 4 does the Victorians again because the previous teacher “got really into” the topic in a cross-curricular half term. Meanwhile, Year 5 has never touched Ancient Egypt, yet they’ll be expected to tackle sophisticated recounts of mummification in a reading test because somebody thought it matched a “theme” about mysteries.

Let’s be honest: if you gave this sort of curriculum map to an engineer, they’d call it a logic error. If you gave it to a chef, they’d call it a menu where strawberries appear only as dessert, only when the season has gone, and only in the kitchen that already burned them five years before.

The deeper problem is that we have allowed curriculum design to be driven by children’s momentary interests, by teachers’ passions, by glossy schemes of work and by whatever sounds like “engaging” on a parents’ evening newsletter. All of that can be lovely. It can also be irrational.

Here’s the kicker: when a curriculum lacks rational structure, it usually fails its least advantaged children first. Middle-class families fill the gaps at home. Other children, meanwhile, are left to rely on school bread alone – and school has served them a buffet with no protein and no vegetables.

What Does Rationalism in Curriculum Design Actually Mean?

Rationalism, as a philosophical tradition, argues that reason is the chief source of human knowledge, rather than raw sensory experience or unexamined emotion. When applied to the messy world of schools, rationalism in curriculum design asks one blunt question of every proposed activity, unit and topic:

What does this teach, and does it logically follow what came before?

In practical terms, that means:

• Knowledge takes priority over vague “skills”, because skills cannot operate in a vacuum.
• Content is sequenced by internal logic, not by calendar seasons or teacher preference.
• Concepts build upon one another with precision: fractions come after division, division comes after whole-number arithmetic, and no amount of warm-fuzzy math games can swap that order safely.
• Curriculum coherence matters more than individual lesson theatrics. A quiet lesson that moves understanding forward is worth fifty noisy lessons that merely move feet and hands.

Now, you may think this sounds dangerously dry. But notice: rationalism doesn’t ban creativity, joy or inquiry. It only insists those things live in a well-built house. You can sing about the Nile, but you must first know it is a river, and that Egypt sits along it, and that rivers shaped early settlements. Rationalism in curriculum design is less about which flag you plant and more about ensuring that every flag is planted on solid ground¹.

The Evidence That Feelings Aren’t Enough

Let’s move from philosophy to science, because the rationalist case for curriculum design isn’t merely about logic. It’s about how we know human minds actually work.

Here’s the central insight from cognitive psychology: you cannot think critically about nothing.

For decades, school policies chased “learning to learn”, “thinking skills” and “21st-century competencies” with the assumption that mental processes could be trained like muscles, separate from the material they process. This has been powerfully challenged by researchers like Daniel Willingham. In his widely-read American Educator article “How Background Knowledge Helps Children Read”, Willingham synthesised decades of findings showing that reading comprehension is not a generic skill. It depends massively upon the reader’s existing knowledge of the topic. A child with rich prior knowledge of rivers will understand a text about rivers more deeply than an equally skilled decoder who knows nothing of rivers. This is the “Matthew Effect” in education: the knowledge-rich get richer, while those without the background simply lag.

The classic demonstration dates back to a 1988 study by Recht and Leslie. They asked weak and strong readers to read a passage about baseball. The weak readers who were baseball fanatics outperformed the strong readers who knew little about sport. Comprehension and memory were driven by what children knew, not by how “skillful” a reader they were labelled. If all you have trained in class is a generic comprehension strategy, you have given children a car with no fuel, asking them to drive to Snowdonia.

So let’s ask the uncomfortable question: if background knowledge is the engine under the bonnet, why do our primary curricula keep deleting factual content to make room for generic “thinking skills” posters?

The evidence suggests we’ve been getting it backwards.

The Powerful Case of the Knowledge-Rich School

Let me take you to a network of primary schools you may have heard of but perhaps dismissed: the Core Knowledge Schools in the United States, established around the work of E.D. Hirsch Jr.

Hirsch – an English professor who spent a career studying literacy – observed something similar to Willingham, decades earlier. In his landmark 1987 book Cultural Literacy, he famously argued that educational romanticism had done a terrible disservice to children, especially disadvantaged ones, by de-emphasising shared, systematic knowledge. His solution was to provide schools with a sequenced “Core Knowledge” curriculum: a clear, grade-by-grade outline of history, geography, science, maths concepts and literature.

His Core Knowledge Foundation has since grown to be used by hundreds of schools. Now, clearly, I need to be careful not to overstate the evidence. American research into whole-school Core Knowledge adoption has been mixed, particularly when implementation is shallow. Yet in schools where it is implemented with real fidelity, and especially in early literacy, results have been repeatedly impressive.

In 2012, researchers at the University of Arkansas examined four years of test data from a network of urban Core Knowledge schools serving high-poverty populations. Reading scores, on average, outpaced state and district growth in multiple grades. You don’t see that kind of reading growth when pupils receive generic “read like a detective” lessons. You see it when they have spent years accumulating a coherent body of world knowledge.

Similar principles have shaped England’s more recent turn toward “knowledge-rich curricula”, championed by school networks and curriculum think tanks. In those classrooms, teachers are asked to plan backwards from what pupils should know at the end of each unit, and to sequence lessons like furniture movers carrying a heavy, precious object: each step must be placed before the next.

Rationalist Design Principles, Step by Step

So how do you translate this into your own curriculum? Whether you lead a single year group or sit on a senior leadership team, the following principles are the nuts and bolts of a rationalist curriculum design. Use this as your audit checklist.

• Write the outgoing thresholds first: before any new unit, define precisely what pupils must know and be able to do by the end; if staff cannot articulate this in plain language, they aren’t ready to teach the unit.
• Sequence by dependency: list your key concepts and ask, “Does this require that? Yes? Then that must come first.”
• Prune the decorative activities: audit your medium-term plans and delete any lesson whose only justification is “it’s fun” or “they’ll remember this”; keep the enjoyment, but only when it transports genuine learning, not when it replaces it.
• Build repeated retrieval into the schedule: spaced retrieval of previously taught facts is not old-fashioned drilling; it is neuropsychology’s loveliest gift to education.
• Check each unit’s reading diet: if pupils are to read and discuss a topic like the Roman Empire, the curriculum should have already given them the vocabulary of settlements, rulers and armies.

That is the bullet point version. Let’s unpack each principle in more detail.

First: Decide What “Knowing” Looks Like

Most curriculum plans fail because their objectives are too philosophical. “Children will experience the wonder of the rainforest” is not a learning objective. It is a holiday brochure. Instead, a rationalist curriculum says: “Children will be able to name the four layers of the rainforest, explain why the canopy is dense, and describe two causes of deforestation, with specific examples.”

When you make knowledge outcomes explicit, an interesting thing happens: assessment stops being a separate, dramatic event. It simply becomes checking whether the intended learning happened.

Second: Sequence by Dependency, Not By Theme

This is where primary planning so often collapses. A topic-led approach (“Oceans”, “Toys”, “Space”) tends to organise by theme rather than by intellectual demand. Rationalism rejects that. Knowledge is hierarchical.

Pupils cannot understand the water cycle if they have not been taught that water exists in three states of matter. They cannot understand why the Vikings raided in summer if they have no concept of seasonal weather and farming pressures in Scandinavia. In some schools, those foundations are missing because the topics didn’t line up. Reason says: that is unacceptable.

Third: Put the Content Before the “Real World” Hook

Nobody is saying that Year 2 cannot dress up as Florence Nightingale. But in rationalist design, the role play is not the entry ticket to learning; it is the reward that comes after the relevant facts have been absorbed. The “hook” should not be a random experience. It should be a moment of intellectual clarity: “Oh! That’s why the lamp is called the Lady with the Lamp.”

When you start with content before experience, deep learning follows faster. Here is the kicker: children find competence itself motivating. Knowing true things genuinely feels good to a young brain. Rationalist teachers rely on that intrinsic reward far more than on gimmicks.

“But Isn’t This All Just Old-Fashioned Memorisation?”

Good question. It deserves a fair answer.

There is indeed a lazy version of this movement, which involves pupils chanting facts in unison and teachers calling it rigour. I am not endorsing rote learning for its own sake. The rationalist case is deeper: memory is the scaffold of all creative thought.

Consider what we know about cognitive architecture. Our working memory – the “mental notepad” we think in – can hold only about three or four distinct items at once. When facts have been committed to long-term memory, however, they get bundled together into larger “chunks”. A Year 6 child who can instantly recognise “photosynthesis”, “chlorophyll” and “carbon dioxide” frees up working memory to reason about plant growth. A child who still needs to decode every unfamiliar scientific term individually has no working memory left over for actual critical thinking.

The educator who “doesn’t want to burden children with facts” is unknowingly guaranteeing that children cannot think about those domains at all. Access to ideas is gated by knowledge. It may seem counterintuitive, but if you want children to question the world, first give them something to enjoy questioning with.

The Base Rate Fallacy That Creeps Into Curriculum

Here’s another way to see how a non-rationalist curriculum errs. Teachers are often asked to plan from “the interests of the children”. That sounds democratic. But let me tell you where it logically leads.

Children most reliably express interests in things they already know something about. A child who has never encountered the Romans will not ask to study the Romans. So, if the curriculum follows pupil interest alone, it inevitably replicates whatever they have encountered at home or on television. For a child who has already absorbed a tremendous amount of the wider world, school becomes a complimentary addition. For a child from a home with fewer intellectual resources, school never introduces anything new. It simply elaborates the narrow, same.

This is an equality scandal disguised as child-centred compassion. Rationalism, in this sense, is the more politically humane option.

What History Can Tell Us

I have lived in education long enough to remember previous pendulum swings. In the 1970s, British primary classrooms embraced “open discovery learning”, colourful corners of interest, and a deep suspicion of subject boundaries. Assessment was kept quiet; informal observation was seen as the only respectful way to understand a child’s “journey”. It was a disaster for a whole generation of working-class boys in particular, whose reading was often left to “emerge” whenever they felt like it.

Interestingly, the initial institutional swing toward rationalist curriculum design occurred several centuries earlier. In the sixteenth century, the philosopher Peter Ramus called for a curriculum based on methodical, visually tidy textbooks that took boys through each topic in a fixed, unbroken logical order. He argued that knowledge should be presented as a kind of branching tree, from general principles down to particular examples¹. Ramus won the argument, historically speaking: he reshaped schooling across Europe for two centuries, precisely because his system was so teachable. I’m not suggesting we resurrect a 16th century curriculum, but our modern revolt against his rigidity threw the baby out with the bathwater – the baby being orderly sequencing.

Knowledge-rich curricula have caught on again in many English and American schools, partly because cognitive science is finally catching up with what the Ramists and Prussian educators sensed without data.

How to Begin the Shift in Your Own Setting

If you’re still with me, you may want a pragmatic route, not just a philosophy. A living curriculum cannot be flipped overnight without giving staff a panic attack. But you can take these three steps this term.

Run a Coherence Audit

Gather your year group’s medium-term plans. Put all the core knowledge themes into a single table. Simply look for gaps, overlaps and absurd orderings. You will almost certainly find something like: Year 4 covers electricity, but Year 6 covers changing circuits, while Year 5 studies “celebrating difference” in PSHE and no science for seven weeks. Flag those contradictions to leadership as an intellectual safety issue. Data driven discussions work well; a good head teacher will listen if you frame it around learning science rather than personal gripes.

Use a “Knowledge Narrative”

Instead of a school-wide topic web that has seven subjects orbiting a theme like planets, ask teachers to write a simple story of the unit: “In these six weeks, children will first understand urban growth, then the need for sanitation, then the design of sewers, culminating in building a model explaining the whole system.” If you can’t tell the unit’s intellectual story in two sentences, the unit is not yet rationally designed.

Put Factual Retrieval On the TimetablePermanently

This isn’t about adding ten minutes of pop-quiz. It is a small daily habit: five questions from material taught two weeks ago, and five questions from last year, chosen deliberately. That practice, repeated for a term, will transform retention. Children will begin to understand that the point of school is knowing things, not just doing things.

The Objections You Will Face

A shift toward rationalism won’t pass without objection. Teachers are used to being told that their lessons must be “hands-on”, “exciting” and “constantly varied”.

But press objections carefully and they will dissolve.

• “Traditional curricula exclude non-white narratives.” The response? A knowledge-rich curriculum does not have to be a white, Western, male cannon. In fact, a rationalist approach demands accuracy: you cannot teach the history of Benin without teaching the specific facts, belief systems and artworks of the Edo people. Romantic, experiential curricula often do more to trivialise non-European histories into “fun days” than a respectful factual curriculum ever could.
• “Children are tired from high-stakes tests.” Fair enough, but that’s a problem of school system design, not of knowledge itself. Knowing fascinating things – about volcanoes, floods, ancient wars, outer space – is not exhausting. Exhaustion comes from lessons where the goal remains so vague that children have no idea if they have achieved anything.
• “What about children with SEND who need play-based experiences?” Rationalism absolutely allows for play – but play with intentionality. Here is the kicker: children with language and memory difficulties rely on structure even more heavily than their peers. Removing coherent knowledge sequences from their day is the worst possible response to their condition.

An Unexpected Outcome: Teacher Autonomy Grows

I find that many teachers resist rationalism because they haven’t been allowed to experience it properly. They assume it means a top-down, scripted pack leaving zero freedom for professional judgement. The opposite is true.

Do you know why so many teachers feel constrained by pacing guides and worksheets? Because when the curriculum’s knowledge sequence is vague, publishing companies provide you with scripted guesses. The only way to free teachers from generic lesson packages is to hand them a precise knowledge map. Once the target is exactly known, at what point does a professional stop needing instructional dictates? Never forget that: autonomy is not destroyed by knowing your disciplinary content; autonomy is destroyed by uncertainty.

Rationalism in curriculum design returns the craft to the teacher. It says: “We agree upon what these children shall learn; in return, you are trusted with how best to teach it.” That is an eminently human bargain.

What Research Now Says About the Long Term

A growing body of educational research supports the intuition that any curriculum which leaves knowledge to chance reduces life opportunities. An analysis by the Education Policy Institute in the UK found that disadvantaged children lose out most during primary years when curricula are run through multiple disconnected topics without clear progression. On the other hand, programmes emphasising explicit instruction and sequenced knowledge have shown impressive leaps even in catch-up summer schools.

One iconic example is the “Renaissance Academy” catch-up program in the United States, run on rationalist lines. It was not a warm, touchy-feely summer camp. It asked struggling pupils in grades 3 to 5 to rapidly acquire explicit reading and mathematics knowledge, hour after hour. At the end of a single summer, the pupils had gained, on average, seven months of reading age. Seven months in three weeks. No amount of art projects will do that – reason, clearly, will.

Conclusion / Invitation

Perhaps you started reading this article hoping to hear about “best practice” tips. Instead, I have asked you to do something more difficult: confront the deep philosophical principles that underpin your curriculum. It can be uncomfortable to question your own school’s cherished traditions. It may feel contentious to question an activity-based Year 2 classroom. But reason demands we ask not “is this lesson fun?” but rather, “is this lesson true to how children’s minds are actually built?”

We have known for centuries that humans learn in ordered steps. Cognitive scientists have told us loudly, from study to study, that knowledge powers comprehension, memory and even creativity. Meanwhile, we persist in building primary curricula on vibes, on passing fads, and on the naïve belief that children will stumble toward wisdom simply because we kept them busy.

Your pupils deserve sturdier ground.

Before you plan your next half term, take the question with you into your planning meetings: Will my curriculum teach children to think, or only to feel as if they are thinking?

Reason has a stake in their future. It’s time you let it take the lead.