What Is Assessment for Learning? Dylan Wiliam's Framework Explained
You're three months into home educating and you've started wondering whether your child is actually progressing — or whether you're just getting through the days. The instinct is to reach for a test or a grade. But the most influential body of research in modern education says that's often the wrong tool. Dylan Wiliam's Assessment for Learning framework offers a sharper, more practical alternative — one that fits home education unusually well.
What Is Assessment for Learning?
Assessment for Learning (AfL), sometimes called formative assessment, is the ongoing process of gathering evidence about where a learner is, where they need to get to, and how to close that gap. The term was popularised by Paul Black and Dylan Wiliam following their landmark 1998 review "Inside the Black Box," which analysed hundreds of studies and concluded that improving formative assessment practices raises student achievement more reliably than almost any other educational intervention.
The key distinction is between assessment of learning (summative: the end-of-year exam, the GCSE grade) and assessment for learning (formative: the question you ask mid-lesson to find out what the child actually understood). Wiliam's argument is that summative grades tell you what happened; formative assessment shapes what happens next.
For home educators, this matters because you don't have the institutional pressure to produce regular grades — and that's actually an advantage. You can spend the time you would have spent testing on the more valuable work of finding out what your child genuinely knows and adjusting your teaching accordingly.
Dylan Wiliam's Five Key Strategies for Effective Formative Assessment
Wiliam distilled his research into five core strategies, which he elaborated on alongside Siobhán Leahy in their 2015 book Embedding Formative Assessment. These strategies are the practical backbone of what "classroom assessment: what teachers need to know" actually looks like in practice.
1. Clarifying, sharing, and understanding learning intentions and success criteria. Before any lesson or project begins, make clear what the child is trying to achieve and what "good" looks like. For a home educator, this might be as simple as saying: "Today we're working on persuasive writing. By the end, you should be able to identify three rhetorical techniques in someone else's writing and use at least one deliberately in your own." Vague goals produce vague learning.
2. Engineering effective discussions, tasks, and activities that elicit evidence of learning. Rather than asking "Do you understand?", which almost always produces a confident nod, design questions that force thinking. Wiliam calls these "hinge questions" — questions where the answer reveals genuine understanding. "If I double the length of a rectangle but halve its width, what happens to the area?" is a far better check than "Do you remember what area means?"
3. Providing feedback that moves learners forward. Research by Wiliam and others shows that feedback which gives a grade and comments actually produces worse outcomes than comments alone, because children read the grade and stop processing the written feedback. Useful feedback is specific, actionable, and focused on the work rather than the person. "The argument in your second paragraph loses focus when you introduce the historical example — try moving it to support your opening claim instead" is more useful than "Good effort, 7/10."
4. Activating learners as instructional resources for one another. In a school setting this means peer assessment. In a home education context with one learner, it means building habits of self-explanation: can your child explain what they just learned to someone else, to a younger sibling, or even to a stuffed animal? The act of teaching consolidates understanding in ways that re-reading rarely does.
5. Activating learners as the owners of their own learning. Self-assessment and metacognition — the ability to notice one's own confusions and articulate them — are among the strongest predictors of long-term academic success. Wiliam argues that learners who can accurately identify what they don't understand are dramatically better positioned to improve. This skill can be explicitly practised by asking children to rate their own understanding on a scale and explain why they gave that rating.
Shirley Clarke's Contribution: Active Learning Through Formative Assessment
Shirley Clarke's work, particularly her book Active Learning Through Formative Assessment, builds directly on Wiliam's research but makes it more immediately practical for classroom teachers — and by extension, for home educators. Where Wiliam is the theorist, Clarke is the practitioner.
Clarke's key contribution is the concept of "talk partners" and the importance of wait time: giving children adequate thinking time before expecting a response, rather than rewarding the fastest answer. She also developed accessible tools for learning intentions and success criteria that are widely used in UK primary schools — and are just as applicable at kitchen tables.
Her research, like Wiliam's, consistently shows that teachers (and home educators) who systematically gather and act on evidence of learning — rather than waiting for the end-of-topic test — produce significantly stronger outcomes. One large-scale study cited in her work found that schools where teachers were trained in formative assessment practices saw gains equivalent to adding a full academic year of progress compared to control groups.
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How to Obtain the Information Required to Support Assessment for Learning
The practical challenge is actually gathering useful evidence without turning every interaction into a formal assessment. Wiliam suggests several low-effort techniques:
- Exit tickets: At the end of a session, ask your child to write one thing they learned, one question they still have, and one thing they'd like to explore further. This takes under five minutes and produces genuinely actionable information.
- Mini whiteboards or scrap paper: Asking a child to write their answer and hold it up (rather than call it out) means you get information from the actual response, not from their confidence level.
- Think-aloud: Ask the child to talk through their reasoning as they work through a problem. Mathematical errors, in particular, are almost always logical errors — the wrong procedure applied consistently — and hearing the reasoning reveals far more than the wrong answer on the page.
For portfolio documentation purposes, the evidence gathered through formative assessment — notes on what was discussed, what misconceptions arose, how they were resolved — is exactly the kind of longitudinal progression record that satisfies a local authority enquiry under Section 7 of the Education Act 1996. It demonstrates that education is efficient, suitable, and responsive to the individual child's development.
Putting the Framework to Work in Home Education
Dylan Wiliam has noted that the research on formative assessment consistently shows the biggest gains come not from expensive programmes but from small, deliberate changes in the moment-to-moment interaction between teacher and learner. That's the conversation at the kitchen table. That's the follow-up question when an answer reveals a partial understanding.
Home educators are in an unusually strong position to implement AfL well, precisely because you have the flexibility to adjust in real time — to spend another week on fractions when the exit ticket shows the concept hasn't clicked, or to move ahead when the hinge question reveals genuine mastery. No timetable, no class of 30, no external pressure to move on.
The England Portfolio & Assessment Templates at homeschoolstartguide.com/uk/england/portfolio/ includes structured weekly learning logs and a formative progress tracker designed around exactly this approach — capturing the evidence of learning as it happens, in the language that local authorities and exam boards recognise.
The Bottom Line
Dylan Wiliam's assessment for learning framework is not a bureaucratic compliance tool. It's a set of practices that make teaching more efficient and learning more durable. For home educators who've been told by a local authority to "provide evidence of progress," the five strategies give you a concrete methodology for generating that evidence through normal teaching — rather than stopping to administer tests that tell you little about what to do next.
The research is clear: regular, responsive formative assessment produces better outcomes than summative testing alone. Home education, done well, is almost inherently formative. The challenge is making it visible enough to be useful both to you and, when required, to the people who ask for proof.
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