Why is it so much harder than it looks to write a good knowledge organiser or any other document which identifies the core knowledge pupils need? It is harder than it looks to identify the right knowledge for quizzing. So often we don’t assess formatively – not because we don’t know we should – but because we haven’t clarity about what we should assess.
To explore why this is all so much harder than it looks, last week, I asked our Ark curriculum and teaching and learning leads this question:

The first option is Albert Einstein. I’ve chosen him because he needs no introduction.
The second person pictured is Jaime Escalante. He was a remarkable maths teacher who worked in Los Angeles. He became famous for his incredible success in teaching advanced mathematics to inner-city students, from disadvantaged backgrounds. His story is so impressive a film was made about it in 1988 – called “Stand and Deliver”. Amazing.
So, which of these two pictured, would be more likely to write a good year 6 or 7 maths knowledge organiser (should you want such a thing)? Einstein had huge expertise in maths and teachers do definitely need, at the very least, the expertise they aim to give their pupils over time. That doesn’t mean Einstein knew what you need to teach a kid, step by step, to build towards that desired level of final expertise. A degree in the subject we teach doesn’t give us that particular knowledge. We’d definitely choose Jaime to write maths knowledge organisers.
Jaime Escalante did also have general teaching skills – but that wouldn’t help much with writing the maths knowledge organiser. Say, we add Ruth Miskin to our mug shot selection. She’s the creator of the Read Write Inc phonics programme. Like Jaime, she must be a skilled teacher but she has the wrong curriculum knowledge for maths. She is an expert in reading. For the maths knowledge organisers we’d still want Jaime! He’d have had a very strong mental map/knowledge of progression in maths. I bet that at any teaching moment he’d know just what those kids needed to learn next.
From this little exercise we can see that knowledge of subject itself that an expert would hold is not the same as teacher’s knowledge of curriculum that pupils need to learn, step by step, over time, to reach the desired level of expertise in the subject. Teachers need to know the steps, in subject content knowledge, that take students from novice to expert.
And once a strong curriculum is in place, the decisions teachers must make in each lesson, even with a fully resourced curriculum, still need to be informed by that knowledge of subject progression. I love the way Michael Fordham explains how this applies to day-to-day practices of teachers, which are often called ‘teaching skills’:
- lesson planning
- questioning
- giving an explanation
- giving feedback
- marking
This is because the teacher’s lesson activities e.g. formative assessment, involve a comparison, between the mental map of the subject the teacher has in their head and the mental map students have in their head. In making a formative assessment, a teacher is trying to diagnose where the gaps in… [the students’] mental map are, so that he or she can then do something about it. To make a judgement call on something as complex as this requires that the teacher’s mental map is very strong… The richer that map of the subject, the more accurately… [the teacher] will be able to identify where the pupil has weaknesses [1].
To reiterate, skilled teachers need to be sufficiently expert in the subject they are teaching, but also experts in the progression in knowledge, step by step, that builds towards the desired level of pupil expertise. This explains why there can be real variation in the quality of teaching even as teachers deliver the same or a very similar curriculum.
[1] Subject knowledge and mentoring: my talk at Teach First – Clio et cetera
Isn’t it odd that such critical teacher knowledge, so crucial to classroom success, has no name? What do we call this teacher knowledge? Some of you may have heard of Shulman’s term. ‘Pedagogical Content Knowledge’. ‘PCK’ overlaps with this unnamed teacher knowledge but ‘PCK’ has been given so many different definitions over time that it might just be confusing to use that term. Michael Fordham talked about this knowledge as a ‘mental map’. Daisy Christodoulou, discussing assessment, talks about a ‘progression model’. With my team of Ark subject Network Leads we discussed a possible name and a definition. My team suggested the term ‘curriculum journey knowledge’ which is pretty good. PLEASE DO suggest your thoughts on what we should call this knowledge.

Finally, I’ve asked myself how teachers today can acquire this ‘curriculum journey’ knowledge in the subjects they teach. Perhaps we have to scramble back to our own memories of learning the subject at school. Also ‘curriculum journey knowledge’ can be inferred through using great curriculum materials or textbooks. And as experienced teachers, we probably once learned from the subject expertise of our older and wiser colleagues. But what happens when those colleagues aren’t there?
Our workforce is relatively young and inexperienced. HOW are younger or less experienced or non-specialist teachers to learn crucial ‘curriculum journey knowledge’ in the subjects they teach? It won’t come from a subject degree. It won’t come from teacher training courses which focus in on generic teaching strategies (as useful as those are). It won’t come from generic training in teaching and learning. And yet, as Fordham explained so eloquently, this mental map or ‘curriculum journey knowledge’ is absolutely crucial for success in all teaching activities.
At Ark this is the reason we place so much importance on co-planning. Perhaps more on this is future blogs!































