Somewhere right now, a teacher is producing three versions of the same worksheet and calling it inclusive practice. There is the “support” version, where a few of the harder questions have quietly disappeared. There is the “extension” version, where the same questions have been given an extra verb, probably “evaluate”, because nothing says academic stretch like Bloom’s Taxonomy with a thesaurus. Then there is the normal version, for that great, mysterious category of students known as “everyone else”.
Job done. Box ticked. Differentiation achieved…. Or not!
The reason this keeps happening is not because teachers are lazy, incompetent, or morally opposed to the idea that students are different. Most teachers learn that students are different five minutes into their first lesson. The problem is that differentiation has become one of those educational terms that everyone supports in principle, very few define well, and almost nobody is given enough time to do it properly. It has been turned into a slogan. What it has not been given is the seriousness it deserves.
Differentiation, properly understood, is not three worksheets. It is not ability grouping with a softer vocabulary. It is not giving the bright kids more work and the struggling students less work, as though volume were the same as responsiveness. It is certainly not the ritual production of support, core, and extension tasks so that an observer can see that something differentiated has occurred. That version is easy to inspect, document, and misunderstand, which is probably why it has become so common.
At its best, differentiation is a philosophical position before it is a teaching strategy. This is why Tomlinson’s work still matters. The enduring value of her model is not that it gives teachers a magic template for managing thirty competing needs in sixty minutes. If it did, every school would have solved this by now and the professional development industry would have to find a new concept to ruin. The value of Tomlinson’s work is that it asks teachers to change how they see students. It insists that we are not teaching a class in the abstract. We are teaching individual students, each with different readiness, interests, prior knowledge, confidence, motivations, anxieties, and ways of making sense of the world.
That distinction sounds obvious, but it is not how schools are organised. Schools are built around groups: year groups, classes, streams, cohorts, intervention groups, extension groups, data categories, and timetable blocks. The individual student is buried under the administrative convenience of ‘the group’. Differentiation challenges that. It asks the teacher to look past the class list and see the actual people in the room. That is not a minor adjustment to lesson planning. It is a different way of understanding the work of teaching.
The difficulty is that education systems often take this profound idea and treat it as though it can be implemented through compliance. Write “differentiate” in the lesson plan. Add a second worksheet, put the students into three groups, mention choice somewhere, and voilà. Maybe add coloured cards if someone from the executive is visiting. The appearance of differentiation is then mistaken for the practice of differentiation, and the teacher is left carrying the burden of making an impossible simplification look professionally respectable.
This is where the conversation becomes dishonest. We tell teachers that differentiation is essential, and it is. We tell them that good teachers know their students, which is also true. We tell them that learning must be responsive, inclusive, and appropriately challenging, which is all defensible. Then we quietly ignore the fact that the teacher may have thirty students in the room, five different classes across the week, limited planning time, significant behavioural complexity, and a marking pile that appears to be reproducing overnight.
That is not a complaint about hard work. Teaching is hard work, and anyone entering the profession expecting otherwise has either been badly advised or has confused teaching with the inspirational montage from a movie: Cue Dead Poets Society. The issue is not that differentiation requires effort. Of course it does. The issue is that we rarely acknowledge the scale and nature of that effort. We talk as if differentiation is a switch teachers can simply turn on, rather than a professional orientation that requires knowledge, judgment, planning, reflection, and time.
Ah, time, that pesky little detail left out of every policy document, strategic plan, professional learning session, and leadership speech about what teachers should be doing more of by Monday.
A teacher can deeply believe in differentiation and still not have enough time to implement it well. A teacher can know their students, care about their progress, understand the theory, and still find themselves defaulting to crude versions of the practice because the system has given them an aspiration without the conditions to realise it. That is not failure. That is arithmetic. There are only so many hours in the day, and teachers do not get access to a secret twenty-fifth hour because a policy document has used the word “inclusive”.
This matters because when differentiation is reduced to compliance, everybody loses. Teachers lose because they are made to feel professionally inadequate for not achieving a version of differentiation that nobody has properly resourced. Students lose because the practice becomes superficial. The concept itself loses credibility because it gets associated with paperwork, tokenism, and the production of slightly different worksheets that nobody really believes are transforming learning.
The tragedy is that differentiation is not a bad idea. It is one of the better ideas in education. The problem is that we keep trying to make it survive inside systems that reward standardisation, speed, coverage, and visible compliance. We say we want teachers to respond to individual students, but we structure schooling around batch processing. We say we value professional judgment, but we often ask for evidence that can be photographed, filed, or uploaded. We say we want complexity, but we keep demanding it in forms simple enough to audit.
Differentiation is a philosophical choice. It is also a professional discipline. It requires the teacher to ask better questions about what students already know, what they are ready for, what might prevent them from accessing the learning, and what kinds of challenges might move them forward. It does not always require a new worksheet, a new task, or a new resource. In fact, one of the great ironies of differentiation is that schools often make it more exhausting by treating it as a production problem. More versions. More documents. More visible artefacts. More proof.
But differentiation is not primarily about producing more. It is about seeing more clearly. That matters because teachers are already drowning in “more”. More reporting, more data, more meetings, more platforms, more compliance, more wellbeing responsibilities, more emails, more initiatives, and more urgent priorities that were apparently all urgent last year as well. When differentiation is presented as another layer of production, it becomes one more thing for an already overloaded profession. It is no wonder teachers reach for the three-tier worksheet, because at least it can be finished before midnight.
A more serious approach would start by admitting that differentiation cannot be separated from workload, class size, curriculum demands, school structures, and professional learning. It cannot be treated as an act of teacher heroism. If schools want teachers to respond meaningfully to individual students, then teachers need the time and conditions to know those students, plan with intention, review what is working, and adjust with some degree of rationality. This is where systems tend to go silent, because structural conversations are expensive, while slogans are free. It costs very little to tell teachers to differentiate. It costs more to create timetables, staffing models, professional learning structures, and school cultures that make serious differentiation possible. So, like most things in education, we settle for the cheaper version. We say the right words, require the right boxes to be ticked, and then rely on teacher guilt to bridge the gap between aspiration and reality.
The teaching profession attracts people with high standards for themselves. That is a strength, but it also makes teachers vulnerable to internalising systemic failure as personal inadequacy. When differentiation is poorly supported, many teachers do not conclude that the conditions are unreasonable. They conclude that they are not good enough. They look at the student who is still lost, the student who is bored, the student who has quietly disengaged, and they carry that home. Meanwhile, the system congratulates itself because the lesson plan had a differentiation box and the box was filled in. Teacher guilt is a remarkably renewable resource, but it is not a sound basis for policy.
This is not an argument against differentiation. It is an argument against pretending. We should stop pretending that writing “differentiate” in a program means students are being taught as individuals. We should stop pretending that three worksheets represent serious responsiveness. We should stop pretending that streaming solves the problem of difference (more on this in the next post). We should stop pretending that teachers can enact a deeply relational and intellectually demanding model of teaching without time, support, and professional trust.
The better argument is both more optimistic and more demanding. Differentiation can be done, but not as a gimmick or a compliance ritual. It works when it is understood as a way of thinking about students, not as a set of decorative additions to a lesson plan. It works when teachers are trusted to make professional judgements rather than perform visible busyness. It works when school leaders understand that differentiation is not something they can mandate from a meeting agenda and assume will materialise by the end of the day.
It also works when we stop confusing responsiveness with endless individualisation. Teachers do not need to create thirty separate lessons for thirty students. That is not differentiation; it is madness. What they need is a clear understanding of the students in front of them, a strong grasp of the learning that matters, and enough professional space to make thoughtful decisions about how to bring those two realities together.
That is the constructive way forward, and it is far more useful than the usual cycle of slogan, compliance, disappointment, and blame. Differentiation begins with a belief that each student matters as an individual learner. If we believe that, we have to build school cultures that enable teachers to act on that belief. Otherwise, differentiation remains another instance of education confusing aspiration with implementation.
Maximising Student Potential 