Formative assessment is one of the most powerful things a teacher can do — and one of the most misunderstood. It is not a test, a grade, or extra paperwork. It is simply finding out what students understand while you can still do something about it. Here is what it means in practice, and five techniques you can run in a primary classroom this week.
Formative vs summative: the core difference
The distinction is about timing and purpose, not format.
- Summative assessment measures learning at the end — the end-of-unit test, the report grade. It judges the result.
- Formative assessment checks understanding along the way, so you can adjust your teaching before the summative arrives. It informs the next step.
A useful way to hold the difference: "When the cook tastes the soup, that's formative; when the guests taste the soup, that's summative." The same question can be either — what makes it formative is that you act on the answer.
The test that mattersAn assessment is only formative if it changes what you do next. Data you collect but never use is just paperwork.
Five techniques for primary classrooms
1. The daily exit ticket
Five quick questions at the end of a lesson tell you what landed. It is the workhorse of formative assessment — fast, repeatable, and honest. We cover it in depth in our exit-ticket guide.
2. Hinge questions
A single, well-designed multiple-choice question at a key moment in the lesson — a "hinge" — where the wrong answers reveal specific misconceptions. If most of the class picks option C, you know exactly what to reteach before moving on.
3. Show-me boards
Every child answers on a mini whiteboard and holds it up at once. In five seconds you see the whole class's thinking, and no child can hide in the crowd or be drowned out by a fast hand.
4. Thumbs and traffic lights
A quick self-check — thumbs up/sideways/down, or red/amber/green cards — for confidence. It is rougher than a quiz, but instant, and it teaches children to notice their own understanding.
5. Two stars and a wish
For written work, children (or you) name two things that went well and one to improve. It keeps feedback focused, actionable, and kind.
Acting on the data — fast
The value of formative assessment is entirely in the response. A simple traffic-light routine works: if most of the class has it, move on; if it is a mixed spread, open tomorrow with a targeted recap; if most missed it, reteach it a different way. Looking at the spread per question rather than an overall score is what points you at the exact idea to address, so you spend reteaching time where it counts.
Keep the stakes low
Formative assessment only works if children are honest, and honesty needs low stakes. The moment a check is graded, children answer to protect the mark rather than to reveal what they do not yet know — which is exactly the information you needed. Keep formative checks ungraded, frequent, and framed as "let's see what we've got so far," not "let's see who's right."
Making it sustainable
The barrier to formative assessment is rarely belief — most teachers know it works. The barrier is workload: doing it daily, for every child, and finding time to review the results. That is where a tool earns its place. Brainling runs the daily-quiz version of formative assessment for you — five questions, each child on a private link, and an automatic per-question answer spread so you can see at a glance what to reteach tomorrow. Combine it with a look at why daily practice beats cramming to make the checks a habit rather than an event.