Spacing isn’t exactly a students’ favourite study technique. Most of us know the reality: even when students are aware of effective study strategies, they rarely choose to use them. They often prefer other methods that are easier and require less effort like rereading notes, highlighting or cramming the night before an exam. These approaches feel productive in the moment because they give an “illusion of mastery”, but the learning rarely lasts.
Spacing is definitely one of the most effective strategies that students consistently ignore, a strategy in which students spread study sessions out over time instead of packing everything into a single block.
So, how can we get students to actually use Spacing? In this blog, we’ll explore:
Why is Spacing so useful?
To understand why Spacing works, let’s take a look at the Spacing Effect. After learning something new, our memory of it declines rapidly unless we reinforce it. However, each time we review or study the material, the curve resets, and the rate of forgetting slows down. When students distribute study across days or weeks, they are forced to retrieve information that has started to fade. That act of retrieval strengthens memory and makes the knowledge more accessible in the future.
Despite this, students often avoid Spacing. One reason for this is that it feels harder. Spacing forces the brain to work to recall information that has started to fade, and that effort feels uncomfortable. In reality, the difficulty is a sign that stronger learning is happening. The second reason is that spacing demands self-regulation. Students need to plan ahead, track what they have studied, and resist the urge to cram. Just like sticking to a workout plan, it’s easy to set the intention but hard to follow through consistently.
This avoidance has consequences. Students who experience test anxiety, for example, are less likely to engage regularly with these effective methods, which in turn undermines their performance. Ironically, the very strategies that feel harder or more uncomfortable in the short term are the ones that make the biggest difference in long-term success.
What does the research say?
Recognising that simply telling students to use spacing rarely changes their behaviour, one study tested a different approach: what if students were actually incentivised to space their learning? They designed a straightforward grading system in which points were awarded not just for the number of practice questions completed but also for the number of days a student engaged with the material.
The researchers designed a grading system that rewarded students not only for the number of questions they completed but also for the number of days on which they practised. In the control condition, called “Counting Questions,” students earned points for every question they answered correctly. In the treatment condition, called “Counting Days,” students earned points for each day they completed a set number of questions, whether that was ten or a hundred.
The system was tested in two randomised controlled trials. Students in the “Counting Days” group spread their practice across an average of 38.5 days, compared with just 17.3 days in the “Counting Questions” group. Both groups answered a similar total number of questions, but the students encouraged to space performed significantly better on the final exam.
Most striking of all, students with lower grades showed the greatest improvement. Because they were incentivised to space their learning, their performance nearly matched that of their peers with higher previous grades.
What does this mean for the classroom?
Awarding points in the same way as the researchers may not always be realistic. But the principle behind their experiment, that students are more likely to use Spacing when the environment encourages it, offers clear guidance for classroom practice.
So, here are three ways that you can encourage Spacing:
1. Incentivise in other ways
Students are unlikely to use Spacing just because we tell them it is effective. They need structures and prompts that make it their natural choice. One way to do this is by breaking large tasks into smaller, regular activities so that revisiting material becomes routine. For example, starting a lesson with a couple of quick review questions takes only a few minutes but can reinforce older content and get students in the habit of spaced retrieval.
Another powerful tool is flashcards. When students create their own based on recent lessons, they build a personalised tool for repeated practice. Over time, these little prompts add up, making Spacing feel less like an extra effort and more like the default way of studying.
2. Set regular homework
Homework is most powerful when it is steady and manageable rather than heavy and overwhelming. Weekly homework assignments such as practice essays, exam-style problems, or short reflections can help students revisit earlier content and keep up with new material at the same time. Even something as simple as asking students to update flashcards or write a short summary at the end of the week can provide valuable Retrieval Practice. The important point is that regularity builds strong habits.
At the same time, it is important to strike a balance. Too much homework risks overwhelming students, leading to stress and disengagement, so the focus should be on quality and regularity rather than volume.
3. Normalise the habit
Ultimately, Spacing is most effective when it feels like an ordinary part of learning rather than an extra task tacked on. We can help by modelling the behaviour in daily practice. This might mean beginning each lesson with questions from a previous unit, revisiting older material in new contexts, or deliberately drawing links between current topics and prior knowledge. When consistency and persistence are valued just as much as high marks, students are more likely to adopt these habits themselves.
Final thoughts
Spacing is one of the simplest and most effective strategies for learning. Yet students often avoid it because it feels harder and requires more effort than cramming. The study offers a hopeful message: with small changes to our teaching, we can shift student behaviour in meaningful ways.
So, don’t just tell students about Spacing; make it part of the learning environment. When we do that, we’re not only improving test scores. W ’re giving students a skill that will serve them long after the final exam is over.
