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Apr 30, 2024 40 tweets 14 min read Read on X
Summary of my presentation at the Directors of Improvement conference today.

(Strap in, it's a bit of a beast)

Image
First up, expertise matters.

The most expert teachers help their students to learn at multiple times the rate of the least expert.

Improving teaching is the biggest lever we have for improving the learning and life chances of the young people in our care. Image
Which is why high quality professional development is so vital.

BUT... the rate at which teachers get better also partly depends on the conditions within their school.

Teacher expertise is not a solo sport. Image
We have a handle on some of these 'collective conditions' that enable teachers to flourish in schools.

But there's a bunch of stuff which is also fairly unintuitive.

I'm going to outline 5 things of these 'powerful yet unintuitive' aspects. Image
But first, WHY are some aspects of schooling unintuitive?

Well, it's largely due to the fuzzy feedback loop between teaching and learning, which makes it really hard to understand these aspects via trial and error.

(it's a bit like playing darts blind) Image
Which is why, as a profession, we have found ourselves in the past flirting with things like learning styles and brain gym.

It's not easy to discern, just from experience, that these things are bunk.

Teaching is so f*&king complex. Image
Which is why there's so much potential up for grabs from being evidence informed.

Researchers can isolate some of the chaos of the classroom and develop insights that so amount of classroom experience can great.

Experience can supercharge teaching experience. Image
Anyway, here are the 5 powerful yet unintuitive things leaders can double down on to create the conditions for accelerated development:

1. Distractions
2. Attention
3. Routines
4. Norms
5. Alignment

Let's look briefly at each...

(deep breath)
1/ DISTRACTIONS

The classroom is a distraction rich environment. There are constantly multiple things competing for student precious attention.

If we can reduce the number of distractions, we can increase the chances they focus on—and learn—the stuff that is of most value. Image
This is obvious Peps. Get in the bin.

Well... partly. I think the EXTENT of the cost is distractions is not quite that intuitive.

For example, a study from @MatthewAKraft found that, in a typical US school, up to 20 days of learning time was lost per year to distractions. Image
@MatthewAKraft That figure doesn't even include disruptions due to behaviour.

(which last week's DfE report suggests is more like a quarter of lesson time 😱)

Regardless, all this tends to be systematically under-estimated by leaders. Image
@MatthewAKraft Why are distractions take up SO much more time than we think?

Well, it's partly because of the 'aftermath' of distractions.

Students will often focus on something else and then it can take time for them to get back to the point they were at in their thinking. Image
@MatthewAKraft In short, distractions leave a wake.

🦆 Image
@MatthewAKraft We can reduce distractions by:

• Getting students coming in on time
• Reducing colleague interruptions
• Keeping slides and explanations clean
• Removing bells & whistles from activities
• Not over-narrating
• Effective behaviour systems
• Banning phones
• Etc. Image
@MatthewAKraft 2/ ATTENTION

So, we've reduced distractions. Now we need to max out the amount of attention that students are paying to the stuff we want them to learn.

The substance of our teaching... the content of our curricula. Image
@MatthewAKraft @Doug_Lemov's participation ratio and thinking ratio are a great lens for wrestling with this.

(and @adamboxer1 has some great blogs elaborating these ideas further) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 In short, small tweaks can lead to big differences in attentional expenditure.

EXAMPLE We often ask questions using this structure...

[name then question] Image
@MatthewAKraft @Doug_Lemov @adamboxer1 But if we swap around the parts...

[question then name] Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Then we instantly increase the number of students who are thinking about the question.

This could end up leading to a 20x increase in attentional expenditure.

(you'll all know/do this I'm sure, but just using this simple example to illustrate) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 We can do something similar with thinking ratio (the amount of attention being paid).

Such as adding 'thinking time' to a question... Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Or going even further by using a 'write, pair, share' structure... Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Which could lead to x50 the amount of attention being paid.

(if you just crudely count the time and ignore opportunity cost etc) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Together, these gains in participation and thinking ratio can generate SIGNIFICANT increases in attentional expenditure.

x1000? 🤯

Probably not, but even if it's just a few percentage points, it's worth it.

(because what our students attend to is what they learn about) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 AND just as importantly, these approaches (implemented well) tend to increase equity within the classroom too.

Cause it's no longer just the smartest and most confident kids dominating.

[NOTE All this assumes that WHAT students are paying attention to is rigorous obvs] Image
@MatthewAKraft @Doug_Lemov @adamboxer1 3/ ROUTINES

A routine is a sequence of actions that happens automatically after being prompted by a cue (aka trigger), all of which happens with minimal thought.

They can be super powerful in school because... Image
@MatthewAKraft @Doug_Lemov @adamboxer1 When a routine is put in place, it enables students to think less about the *process* of learning, and as a result, think more about the *content* of learning.

Routines redeploy student attention.

(AND they create a safe environment, which is important for students with SEND) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 NOTE Routines don't always 'bear fruit' as quickly as we expect.

In the early phases, we are less skilled, and our students are less familiar. As a result, we'll likely see a dip information to begin with.

It's only once we've automated things do all the benefits emerge. Image
@MatthewAKraft @Doug_Lemov @adamboxer1 How long does it take for a routine to become automated?

Well, it partly depends on the complexity. For simple stuff (drinking a glass of water with breakfast), it might take 20 reps. For more complex stuff (school stuff), it might take 50.

Which could be weeks or months. Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Fortunately, there's a magic way to rapidly accelerate this process.

If multiple teachers use the same routine (actions + cue), then students will cover those reps WAY quicker.

(this is EXHIBIT A on the value of *alignment* between colleagues) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 4/ NORMS

We are deeply hardwired to emulate the behaviours and attitudes of those in our group.

(way more than we think)

So much so that norms—these unwritten rules of a group—often ride roughshod over more formal school rules or policies. Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Influencing norms is relatively straightforward. We just need to *amplify* the visibility of those behaviours and attitudes we want other students (or staff) to emulate.

You do this already... "Singh has come in and got started on the task straight away."

Just do more. Image
@MatthewAKraft @Doug_Lemov @adamboxer1 Norms are mediated by belonging.

When we feel part of a group, its norms have an even greater influence on us.

(belonging also increases feeling of wellbeing too... it's proper) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 As well as creating inclusive environments, we can boost belonging by building 'common ground' between people.

One of the most powerful ways to achieve this is by having a fierce sense of *purpose* that everyone lines up behind.

This immediately gives folks something in common. Image
@MatthewAKraft @Doug_Lemov @adamboxer1 5/ ALIGNMENT

The norms of different groups (aka classrooms) interfere with and bleed into each other.

The more teachers in a school are aligned on their norms (and values), the stronger the effect will be for students.

(EXHIBIT B) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 SUMMARY ⤵️

(finally) Image
@MatthewAKraft @Doug_Lemov @adamboxer1 IMPORTANT This is a *sustainable* approach to school improvement.

These are things you ALREADY DO.

(it's just a case of doubling down on this stuff, and maybe doing less of other stuff). Image
@MatthewAKraft @Doug_Lemov @adamboxer1 HUGE thanks to @LeoraCruddas & @steverollett for giving me the stage at this ace event.

And to all you Directors of Improvement (and readers of this thread) for giving me your precious attention.

Education ROCKS 🤘
@MatthewAKraft @Doug_Lemov @adamboxer1 @LeoraCruddas @steverollett Now, if you wanna get serious about this stuff, then it can be helpful to have some power tools in your kit.

This is exactly what @Steplab_co (the whole school version) has been designed to achieve.

steplab.co
Image
@MatthewAKraft @Doug_Lemov @adamboxer1 @LeoraCruddas @steverollett @Steplab_co And after all this, you want even more Peps, then mosey on over to Evidence Snacks and fill yer boots.



👊 snacks.pepsmccrea.com
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@MatthewAKraft @Doug_Lemov @adamboxer1 @LeoraCruddas @steverollett @Steplab_co PS. Link to @CSTvoice new framework ⤵️

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More from @PepsMccrea

Nov 30, 2025
Pedagogical Fit (and how it relates to adaptive expertise)

One of my fav ideas:

Image
What our students pay attention to and think about is what they end up learning.

There are a variety of tools we can deploy to guide thinking, some better (such as elaboration or retrieval), some worse (such as learning styles and brain gym).
However, effective teaching is not just about having the right tools to hand, it’s also about choosing the right tool for the job.
Read 10 tweets
Nov 16, 2025
Elaboration:

The key to deepening understanding and transfer

Image
Prompting students to externalise their thinking through activities such as talking, writing, or drawing can enhance learning.

This works by focusing attention, strengthening encoding, and fostering clarity of thought.
During externalisation, if we prompt students to expand upon new ideas, integrate them with prior knowledge, or organise them in more meaningful ways, we can help them to deepen their understanding and better apply it to new situations.
Read 12 tweets
Oct 12, 2025
🚨 LIBERAL OVERREACH

When applying our values backfires:

Image
The myth of learning styles is pervasive across society (and even education). But what exactly makes it so attractive?

One compelling—albeit more theoretical than empirical—argument is that such concepts hold a modern-day ‘moral appeal’.
We live in a society that places a high value on individuality, personal choice, and the inherent superiority of natural traits.

Understandably so—these are the cornerstones of liberal democracy and romanticism, the grand narratives upon which many Western nations have been built.
Read 12 tweets
Sep 14, 2025
Student behaviour is a big deal.

It's best taught (rather than told):

Image
When behaviour is strong in school, students feel safe and can devote more attention to learning.

When it’s not, school can be a painful experience for both students and staff.

Excellent behaviour is a pre-condition for success.
However, excellent behaviour is not always the status quo across our system.

A recent survey by the DfE found that, on average, around a quarter of learning time is lost to poor behaviour.

That’s over 44 days a year 😱
Read 12 tweets
Jul 9, 2025
🔥 16 hottest education related research papers from the last 8 weeks:

(all open source 🔓)

1/ Review of RCTs on growth mindset in schools

→ finds strongest studies show near-zero impact, so large-scale investment may not be warranted

bera-journals.onlinelibrary.wiley.com/doi/10.1002/re…
2/ Longitudinal study of ‘teaching to the test’

→ finds increased TTT before exams may (in contrast to common views) actually boost intrinsic motivation, importance, and utility

sciencedirect.com/science/articl…
Read 17 tweets
Jul 6, 2025
Composite Planning (vs solo planning).

Leveraging specialisation & scale for better education:

Image
The quality of any lesson plan (or sequence) is limited by the expertise of the planner and the amount of time available for planning.

Also, the things we teach are often largely similar across many classrooms and schools.
It is for these 3 reasons that—as a profession—we should be thinking hard about 'composite' (rather than solo) approaches to planning.
Read 15 tweets

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