Ofsted Deep Dives Explained (and What Replaced Them)
Ofsted deep dives explained: how inspectors evaluate your curriculum's intent, implementation and impact, and how to prepare your subject leads.


Ofsted deep dives explained: how inspectors evaluate your curriculum's intent, implementation and impact, and how to prepare your subject leads.
Editor's note (June 2026): Ofsted's renewed inspection framework, in use from November 2025, no longer uses subject deep dives. Inspections now use report cards with a five-point scale (urgent improvement, needs attention, expected standard, strong standard, exceptional) and a dedicated focus on inclusion. The detail below remains useful background on how deep dives worked, but it no longer reflects current inspection practice.
Collaborative planning helps subject leaders align curriculum to school vision and national standards. Lesson observations and feedback let teachers improve teaching. Staff meetings allow leaders to share expertise and best curriculum practice.

As school leaders embark on the process of preparing for Ofsted examinations, adopt key strategies that ensure success and demonstrate a thorough understanding of the national curriculum. This process begins with helping subject leaders, who play a pivotal role in aligning curriculum content with both the school's vision and the requirements set forth by national standards. See also: Subject leadership in primary schools.
Evidence overview
Subject leaders build cohesion, encouraging collaboration and open communication. This helps them develop effective curriculums (Fullan, 2007). The curriculums then support each learner's learning across all subjects.
Lesson observation is key for Ofsted readiness. It shows classroom teaching and learning. Regular feedback helps teachers improve their methods. This ensures lessons meet curriculum needs and helps build a supportive learning environment, a key factor identified by Hattie (2009).
Subject leads can share expertise in staff meetings. They should discuss problems and work together (Vygotsky, 1978). This ongoing dialogue on teaching helps learners (Bruner, 1966). It also allows staff to adapt their methods (Piaget, 1936; Dewey, 1938).
Secondary schools must adapt the curriculum for teenage learners. Content should challenge them and link to their interests (Willingham, 2009). Schools should expect questions and reflect to improve. This shows dedication to growth (Dweck, 2006; Hattie, 2008).
Subject leaders should collaborate for Ofsted success. Focus on lesson observation and know the national curriculum. Use research strategies and Ofsted's framework. Educators can confidently show high quality learning experiences.
Ofsted's inspector training materials have been made publicly available. Originally designed as training materials, the inspection criteria for each subject is quite detailed and this has been summarised into crib sheets for the inspectors. Many school leaders are wondering why they are not given access to a version of this to help them better understand the process in the first place. The documents make interesting reading but shouldn't become the 'way' to run a school. These 'secret sheets' starting with English are summarised below and are intended to be used as a tool to help us think about our curriculum more effectively.
The points below will help your curriculum team think about the quality of education you deliver. If nothing else, it will provide an interesting framework for internal decisions about developing an ambitious curriculum that meets the needs of your current learners. Explanations of both the primary and secondary education inspection framework are outlined below. It's refreshing to see an inspection methodology from a different perspective; whether you are due a 'visit' or not, these extracts will provide your leadership team with some food for thought.
Learners must show clear progress in reading, writing, speaking and listening. Lessons should build knowledge in a systematic way, covering the national curriculum. Show how learners improve fluency, comprehension and vocabulary with different texts. Inspection readiness demands this.
A high-quality primary education provides younger-aged learners with the knowledge and skills they need for later success. The curriculum enables older KS2 learners to start to gain expertise in aspects of English language and literature
Contents and implications for primary school inspectors
Schools should structure their English curriculum with clear intent that outlines what learners will learn and why, supported by detailed implementation plans. The curriculum must show logical sequencing that builds knowledge progressively from early years through to key stage outcomes. Regular assessment points should demonstrate how the curriculum's impact is measured and monitored.
Scope
Writing
Spoken language
Components & sequencing
Memory
Disciplinary rigour
Early years

Explicitly teach English skills and give learners time to practice them. Use guided reading, shared writing and systematic phonics (Rose, 2006). Model often, then scaffold practice so learners build confidence (Vygotsky, 1978).
This informs curriculum refinements (Wiliam, 2011). Sadler (1989) noted assessment guides future learning. Black and Wiliam (1998) showed formative assessment helps learners progress. Curriculum impact improves when teachers analyse assessment data and adjust teaching.
Schools build positive curriculum cultures when staff understand the vision via training and planning. Leaders should expect much from every learner and give teachers resources (DuFour, 2004). Open talk and shared curriculum ownership builds subject cohesion (Fullan, 2007; Hargreaves, 2003).
Curriculum leaders need systems to check quality across subjects, (Robinson, 2007). Review lessons, learners' work, and data to track progress regularly, (Wiliam, 2011). Good communication lets subject leaders share effective methods, (Earl & Timperley, 2009).
Curriculum leaders need clear policies. These should cover intent, strategies and impact for each subject. Policies must define roles in curriculum design, assessment and quality. Review policies regularly to meet current requirements (Stenhouse, 1975) and school goals (Tyler, 1949).
English lessons in Key Stages 3 & 4 must show learners' growth in writing and analysis. Diverse texts should challenge learners, building skills. Curriculum links to exam requirements help learners succeed (Wiliam, 2010; Yorke, 2000).
A high-quality education in English combines language and literature, enabling learners to read as writers and write as readers. No opportunity lost for celebrating the joys of reading literature and finding out about how language works.
Literary studies:
Linguistics:
Composition:
Rhetoric:
Reading:
Components & sequencing:
Sixth Form:
Memory:
Disciplinary rigour:

Good teaching blends whole class lessons with differentiated tasks. This supports each learner's unique needs (Vygotsky, 1978). Teachers should use discussions and group work to build analytical and communication skills (Mercer & Littleton, 2007). Spaced repetition helps learners remember information (Ebbinghaus, 1885).
Success criteria must clearly link curriculum aims and standards. Teachers should use varied assessments like feedback and tests, (Black & Wiliam, 1998), to check understanding. Analyse data to plan lessons and find areas to improve (Hattie, 2012).
Researchers like Bloom (1968) found high expectations boost learner progress. School leaders should show high standards by applying rules fairly. Celebrate learner success, as Rosenthal and Jacobson (1968) showed it matters. Monitor progress regularly across subjects, per Hattie (2009).
Curriculum leaders ensure subjects meet national standards and mirror school values. They monitor teaching quality and assess learner progress, offering support to colleagues. Regular reports to senior leaders track curriculum effectiveness and pinpoint development areas.
English curriculum policy must clearly state expectations for literacy skills. It should detail assessment, intervention, and enrichment to aid learner progress. Regular reviews keep policy aligned with national needs and school improvements .
Schools must grasp EIF terms: intent, implementation, and impact (Ofsted, 2019). Learn about cultural capital, knowledge types, and curriculum coherence. Staff knowledge of these terms aids inspection discussions.
Learners gain speed and accuracy by recalling facts easily (Anderson, 1983). Automaticity frees up working memory for complex thinking. Handwriting and punctuation need automatic practice (Berninger et al., 2006; Graham et al., 2008).
Components: The building blocks of knowledge or sub-skills that a learner needs to understand, store and recall from long-term memory in order to be successful in a complex task. See Automaticity.
Composites: The more complex knowledge which can be acquired or more complex tasks which can be undertaken when prior knowledge components are secure in a learner’s memory.
Cumulative dysfluency: Educational failure caused when learners do not have enough opportunities to recall knowledge to gain automaticity with the use of that knowledge. Over time this may cause many gaps in learners’ knowledge which prevent or limit learners’ acquisition of more complex knowledge.
Cumulative subjects, such as English literature or history, offer teachers content choices. Learners progress by adding to their knowledge. "Cumulative sufficiency" matters for curriculum quality in these subjects (Wheelahan, 2010). These contrast with hierarchical subjects (Young & Muller, 2010).
Sufficient curriculum content gives learners enough subject knowledge. This aids curriculum quality, particularly with many subject options.
Fluency means learners read quickly without sounding out words (automaticity). Accuracy, measured in correct words per minute, is also important. Prosody, or expressive reading with phrasing, completes fluency (Pikulski & Chard, 2005).
Deep structure (will include subject-specific examples): The different ways a principle can be applied that transcend specific examples. When a principle is first learned, it is used inflexibly as the ib learner profile: the 10 attributes explained for teachers will tie that knowledge to the particulars of the context in which the principle has been learned (the ‘surface structure’). As a learner gains expertise through familiarity with the principle and its applications, their knowledge is no longer organised around surface forms, but rather around deep structure. This means that experts can see how the deep structure applies to specific examples and that is an important goal of education.
Disciplinary knowledge: Methods and conceptual frameworks used by specialists in a given subject, e.g. Knowledge of history or geography as a discipline.
Expressive language: Refers to how your child uses words to express himself/herself.
Hierarchical subjects: Subjects where content has a clear hierarchical structure and there is often less debate about content choices than for cumulative subjects. This is because there are core components of knowledge that you must know in order to be able to progress within the subject. It would be hard to argue for a mathematics curriculum that didn’t include algebra or place value.
English is both hierarchical and cumulative (non-linear).
Long-term memory: Where knowledge is stored in integrated schema, ready for connecting to and for use without taking up working memory. See schema.
Phonics: The study of the relationship between the spoken and written language. Each letter or combination of letters represent a sound or sounds. The information is codified, as we must be able to recognise which symbols represent which sounds in order to read the language.
Progression model: The planned path from the learner’s current state of competence to the school’s intended manifestation of expertise.
Schema, plural schemata, are mental frameworks. They organise information categories and connections (Bartlett, 1932). Learners use schema to understand new experiences (Piaget, 1954). Schema develop and change as learners gain knowledge (Rumelhart, 1980).
Research demonstrates the importance of subject knowledge (SK) (Shulman, 1986). SK includes key concepts within a subject, like maths or history. It informs the effective teaching and assessment of each learner (Willingham, 2009; Christodoulou, 2014).
Understanding: We are using the cognitivist model in which understanding describes learners’ interconnected knowledge e.g. Of facts, concepts and procedures in maths. Understanding describes a certain schematic pattern of knowledge and is not qualitatively different from knowledge. Mental schemata can be viewed as network node diagrams, where nodes represent knowledge (facts, concepts, processes, features) and arcs the relationships between them.
Understanding in this model is a function of the quantity of appropriate nodes and the quantity of appropriate arcs, more knowledge, and more connections between them leads to more understanding. A knowledge schema can always be developed further and this is synonymous with deepening understanding. For more on this topic, see Maths deep dive questions. In this sense a curriculum plan articulates the degree of understanding intended.
In everyday life, the question ‘do you understand?’ invites a binary yes/no response. This implies that understanding is something that is finite and can be possessed absolutely. This is incorrect and leads us into many traps, such as trying to ‘teach for understanding’ as an absolute when understanding can be viewed as a continuum and the nature and degree of understanding sought should be part of a teacher’s articulated curricular intent.
Working(short-term) memory: Where conscious processing or ‘thoughts’ occur. Limited to holding four to seven items of information for up to around 30 seconds at a time.
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Ofsted inspections check subjects closely. Inspectors review curriculum intent, implementation, and impact. They speak with subject leaders about sequencing and learner recall. Inspectors look for learning evidence using Ofsted criteria.
Ofsted uses six focus areas to check subject quality (inspection materials). Inspectors use these areas to assess if learning is ambitious. Evidence does not need to fit these categories neatly. Schools can use these areas to develop curriculum (Ofsted, leaked materials).
Help subject leaders connect curriculum content with school vision and national standards through team planning. They must show understanding of knowledge building and discuss how assessments measure impact (Wiliam, 2011). Leaders should prepare for deep-dive questions and reflect on curriculum effectiveness (Earl & Timperley, 2008).
Inspectors check memory retention. It shows if learners embed knowledge and progress (Anderson & Krathwohl, 2001). Memory focus checks curriculum fluency (Sweller, 1988). This assesses foundational knowledge for learners' future success (Willingham, 2009).
The primary English curriculum needs clear reading, writing, speaking and listening progression. Learning goals must be ambitious, lessons well-sequenced. Show how learners build fluency, comprehension and vocabulary across texts (e.g. Cox, 1991; Wyse, 2006). Prioritise knowledge, vocabulary, and diverse texts, as suggested by Rosenblatt (1978) and Halliday (2004).
Lesson observations give targeted feedback, helping teachers improve teaching and meet curriculum goals. Subject leaders should share knowledge and discuss issues at meetings, working together on curriculum. This supports improvement and creates teamwork (Hattie, 2012).
The article warns that whilst the leaked 'secret sheets' provide interesting insights into inspection criteria, they shouldn't become the primary way to run a school. These materials should be used as a tool to think about curriculum effectiveness rather than as a rigid framework to follow. Schools should focus on developing an ambitious curriculum that meets their current learners' needs rather than simply trying to tick inspection boxes.
Consider an evaluation framework with eight domains and 40 indicators, drawing on the school effectiveness research tradition (Creemers, 1994; Sammons, 1999; Mortimore, 1993) and informed by the Education Endowment Foundation's contemporary guidance. This helps find strengths and areas needing improvement. Focus on evidence-based school improvement for the learner.
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