Schools collect more data than ever before.
Attendance is monitored daily. Behaviour incidents are recorded and analysed. Attainment data helps identify trends, target support and measure progress over time.
Yet one area often remains surprisingly difficult to quantify: physical activity.
Most schools know how many pupils attend sports clubs, take part in competitions or participate in enrichment activities. What they often don't know is how active pupils actually are throughout the day.
Are children moving enough to support their health and wellbeing?
Which pupils are least active?
Are investments in PE, school sport and physical activity initiatives making a measurable difference?
These are the questions physical activity data can help answer.

Why physical activity data matters
Physical activity plays an important role in children's physical health, mental wellbeing and readiness to learn. As a result, schools invest considerable time and resources into helping pupils move more, whether through PE lessons, active playtimes, extracurricular sport, active travel programmes or targeted interventions.
However, measuring the impact of these initiatives can be challenging.
Participation figures can tell us how many children attended a club or took part in a programme, but they don't always tell us whether activity levels actually increased.
A child may attend every football session but remain relatively inactive throughout the rest of the week. Another pupil may never join a club yet accumulate high levels of movement through active play and everyday habits.
Understanding physical activity requires more than participation data alone.
What is physical activity data?
Physical activity data is information that helps schools understand how much movement pupils are actually accumulating throughout the day.
This may include:
- Daily step counts
- Active minutes (often measured as MVPA)
- Activity trends over time
- Comparisons between classes and year groups
- The impact of interventions and programmes
At Moki, we often refer to this as movement data - objective information that helps make physical activity visible and measurable.
Rather than relying solely on surveys or observations, physical activity data provides a clearer picture of what is really happening across a school population.
The difference between participation data and physical activity data
This distinction is becoming increasingly important.
Participation data measures opportunities.
Physical activity data measures outcomes.
For example, a school may report that 200 pupils attended an after-school sports club. That's useful information, but it doesn't reveal whether those pupils became more active overall.
Physical activity data helps schools understand whether behaviour has actually changed.
In a world where schools are increasingly expected to demonstrate impact, that distinction matters.
What should schools measure?
The most useful physical activity datasets tend to focus on a small number of meaningful indicators.
Steps
Step counts provide a simple and accessible measure of overall movement. They are easy for pupils, teachers and parents to understand and can be highly effective for engagement and goal setting.
Active Minutes (MVPA)
Moderate to Vigorous Physical Activity, often shortened to MVPA, measures movement at an intensity associated with health benefits.
While steps show overall movement, active minutes provide a stronger indication of health-enhancing physical activity.
Trends Over Time
One day's activity rarely tells the full story.
Tracking activity levels over weeks, months and terms allows schools to understand patterns and evaluate the impact of initiatives more effectively.
Differences Between Groups
Physical activity data can help schools identify variations between year groups, classes and pupil groups, making it easier to target support where it is needed most.
Using physical activity data to improve outcomes
The most valuable use of physical activity data is not reporting.
It is decision-making.
Schools that understand activity levels can make more informed choices about where to invest resources, which interventions to expand and which groups may require additional support.
Rather than relying on assumptions, they can use evidence to guide action.
This creates opportunities to improve outcomes not only for the most active pupils, but also for those who may benefit most from increased movement.
The future of physical activity measurement
As expectations around accountability and impact continue to grow, physical activity is likely to follow the same path as attendance, behaviour and attainment.
Schools are increasingly being asked not just what they delivered, but what difference it made.
Physical activity data provides one way to answer that question.
By making movement visible, schools gain a clearer understanding of their pupils, their programmes and the opportunities that exist to create healthier, more active school communities.