The Missing Ingredient in Reading Progress Isn’t Instruction. It’s Volume.

Over the past decade, we have transformed how children are taught to read.

Phonics instruction is now widely embedded. Outcomes in the early years are strong. Most children leave Key Stage 1 able to decode words accurately and fluently.

And yet, something does not add up.

By the end of primary school, a significant proportion of pupils still fall short of the expected reading standard. Progress stalls. The gap persists.

If we have improved how children learn to read, why have we not seen the same improvement in how they develop as readers?

Reading is not a one-time skill

Part of the answer lies in how we think about reading.

We often treat reading as a skill that can be taught and then secured. Once a child can decode, it can feel as though the job is largely done.

But reading does not work like that.

Reading is more like:

• fitness than instruction

• practice than performance

• accumulation than acquisition

A child does not become a strong reader simply because they can read.

They become a strong reader because they read a lot, over time.

The role of “reading miles”

In literacy research, this idea is sometimes described as “reading miles.”

The concept is simple:

The more a child reads, the more their reading develops.

Once decoding is secure, progress depends far less on how reading is taught and far more on how much it is practised.

As the Department for Education’s Reading Framework puts it:

“Once pupils can decode accurately and speedily, reading a lot is the principal way they develop as readers.”

Each time a child reads, they:

• encounter new vocabulary

• strengthen word recognition

• build fluency

• develop background knowledge

• improve comprehension

These gains are small in isolation. But over time, they compound.

Just as:

• miles build endurance in running

• practice builds fluency in music

• exposure builds proficiency in language

Reading development is the cumulative result of sustained exposure to text.

The problem: children are reading less

If reading development depends on volume, then one question becomes critical:

How much are children actually reading?

The answer is concerning.

Today, fewer than one in five children report reading daily in their free time, representing a 51% decline since 2005.

This matters because reading is not just something that happens in lessons.

The majority of reading development happens:

• outside direct instruction

• through independent practice

• across days, weeks, and years

If that practice declines, so does the opportunity for reading to improve.

When reading does not compound…

When children do not accumulate sufficient reading miles, the consequences are gradual but significant.

Less reading leads to:

• fewer encounters with new words

• slower vocabulary growth

• weaker fluency

• reduced comprehension

And this creates a feedback loop.

As reading becomes more difficult:

• it feels less rewarding

• it requires more effort

• it is easier to avoid

Which leads to less reading.

Over time, small differences in reading volume become large differences in reading ability.

Reframing the problem

This helps explain a pattern we see across the system.

Strong early decoding does not automatically translate into strong later reading outcomes.

Not because the early teaching is ineffective.

But because reading development depends on what happens next.

If children do not continue reading, frequently, consistently, and independently, progress slows.

The issue is not just how children are taught to read.

It is whether they continue reading once they can.

A different question?

If reading volume is this important, then the challenge shifts.

Instead of asking:

“How do we teach children to read?”

We also need to ask:

“How do we ensure they keep reading?”

Because without sustained reading:

• reading miles do not accumulate

• development does not compound

• and early gains begin to plateau

Where this leads

Understanding the role of reading miles changes how we think about literacy.

It suggests that improving outcomes is not only about instruction, but about behaviour:

• whether children choose to read

• whether they persist when it becomes difficult

• whether they return to reading over time

Which raises the next question:

If reading is so important, and we know children can read, why are so many choosing not to?

Closing line

Reading is not a skill you learn once.

It is a skill that grows with every page, or stalls without it.

This article draws on insights from our recent whitepaper exploring why reading progress stalls and what can be done to address it.

You can read the full paper here: https://www.auris.tech/white-papers