Getting children into school was the goal. Across much of the world, it worked. Attendance rates climbed. Enrolment gaps narrowed.
But once children are in school, are they moving through it at the right pace?
This is the question behind a UNICEF analysis I co-led, using data from roughly 45 countries and territories surveyed through MICS6, the sixth round of the Multiple Indicator Cluster Surveys. The data connect three things that are rarely available together: children's age, the grade they attend, and whether they can demonstrate foundational reading and numeracy skills.
What the data show is stark.
Who's on track and who isn't
For every child in the data, we ask: is their age what you would expect for the grade they are in?
A child entering primary school at age 6 should be around 10 by grade 5. If they are 12 or 13 in that same grade, they have entered late, repeated a grade, or had their schooling interrupted. We call these children overage. Children younger than expected are underage. Those within a year of the expected age are at expected age-for-grade.
Now look at what happens in practice.
The highlighted diagonal is where children should be. A 6-year-old in Grade 1. A 10-year-old in Grade 5. A 13-year-old in Grade 8. If school systems were well-aligned, the diagonal would dominate. Most children would sit on it.
It doesn't. The largest share at any expected age-for-grade is around 35%. The rest of the weight spreads below the diagonal: older children in lower grades. By Grade 5, the expected-age cell holds 30% of children. The other 70% are spread across ages 11 to 14.
That spread is not random. It is the visible trace of late entry, grade repetition, and interrupted schooling. All compressed into a single grid.
How countries compare
Some countries have both high attendance and strong age-grade alignment. Their learning outcomes are the strongest. Others have achieved near-universal attendance but still have large shares of overage children, and their learning outcomes are weaker.
Nine countries face a double challenge: low attendance and high overage rates. Across every country group, the same children bear the burden: those in rural areas and from the poorest households are consistently more likely to be overage.
Access is a threshold, not a destination
The global conversation about education has centred on access. But access is a threshold, not a destination. Children who enter school late, repeat grades, or fall behind their peers are less likely to gain the foundational skills that everything else builds on.
Now there is direct evidence across 45 countries, linked to measured learning outcomes. The data are clear: being in school is not the same as progressing through it, and progression shapes whether children learn.
There is more to this
These posts tell a shorter version of a larger story. The first tracks when children gain foundational reading skills. This one asks whether they are moving through school at the right pace.
The full interactive stories, designed to walk viewers through the data step by step, are coming soon.
About the data
This analysis uses the Foundational Learning Skills module and age-for-grade indicators from MICS6, covering roughly 45 countries and territories. The reading measure identifies children who can read and understand a short story. Age-for-grade status is classified using expected school entry age and grade placement, with a tolerance of one year in either direction. Results are disaggregated by wealth, location, and country group. The workflow uses survey-weighted estimates and applies minimum sample-size rules. The analytical pipeline follows the same structure as the companion project, the Foundational Learning Gradient.
The full analysis is available as two interactive scrollytelling stories built in Flourish:
→ Part 1: How does age-grade alignment matter for learning?
→ Part 2: Getting children into school is not enough
Acknowledgements
I co-led this with Femke van den Bos, with support and review from Justin Kleczka and Luc Warde, under the supervision of Sakshi Mishra and the leadership of JP Azevedo, within the Education team in the Data and Analytics Section at UNICEF Headquarters.