By the end of Reception, disadvantaged pupils are already 4.6 months behind their peers.
By the end of primary school, that has grown to 10.1 months.
By GCSE, it reaches 17.9 months.
For pupils who are persistently disadvantaged, the gap exceeds 21 months.
This is perhaps the most important message from the recent EPI and EEF report, Growing Apart: The Evolution of the Disadvantage Gap. The report tracks how educational inequalities accumulate from Reception through to post-16 education. (Read the full report here: Growing Apart: The Evolution of the Disadvantage Gap)
The challenge for schools is that we often focus our interventions where the gap is most visible rather than where it first begins.
Prior attainment matters because opportunity compounds
One of the strongest findings in the report is that prior attainment becomes the largest contributor to the gap at every phase beyond Reception. Nearly half of the GCSE disadvantage gap is already present by age 11.
When students begin behind, they are not simply carrying a lower score.
They are carrying a reduced level of curriculum access.
This is why I have argued repeatedly that we need to focus less on attainment gaps and more on curriculum access gaps.
Attainment is the outcome.
Access is the mechanism.
Attendance is not a pastoral issue
Another striking finding is the growing role of attendance.
At primary school, absence contributes around one-fifth of the disadvantage gap.
By GCSE, it contributes around one-third.
This aligns with wider evidence. The EEF notes that disadvantaged pupils are almost twice as likely to be persistently absent as their peers and that attendance remains one of the biggest barriers schools identify when supporting disadvantaged learners.
If you want practical guidance on improving attendance, the EEF’s attendance guidance is well worth reading: EEF Attendance Guidance Report
SEND cannot be ignored
The report also highlights the significant role of SEND throughout a child’s educational journey.
By Reception, SEND identification is one of the largest measurable contributors to the disadvantage gap. By primary school, SEND remains a substantial factor. By secondary school, much of its influence becomes embedded within prior attainment itself.
Schools looking to strengthen their provision may find the EEF guidance report on SEND particularly useful: Special Educational Needs in Mainstream Schools
The real question
Perhaps the most important question raised by this report is not:
“How do we close the attainment gap?”
It is:
“At what point did we allow students to lose access to the curriculum?”
Because by the time the GCSE outcomes arrive, the story has already been written.
The gap did not appear in Year 11.
It grew every year before it.
Schools that genuinely want to narrow the disadvantage gap should spend less time analysing final outcomes and more time identifying where curriculum access is being lost.
That is where the gap begins.
And that is where we have the greatest chance of stopping it from growing.
©️ Teachers’ Lyceum 2026.