What is Progress 8? — Understanding School Performance Measures

What Progress 8 Measures

Progress 8 is the headline accountability measure for secondary schools in England. Introduced by the Department for Education in 2016, it measures the progress pupils make between the end of Key Stage 2 (their primary school SATs in Year 6) and the end of Key Stage 4 (their GCSE results in Year 11).

In simple terms, Progress 8 answers the question: did pupils at this school make more or less progress than pupils with similar starting points at other schools nationally? It is a value-added measure, which means it accounts for each pupil's prior attainment. This makes it a fairer way to compare schools than looking at raw GCSE results alone.

How Progress 8 is Calculated

Progress 8 is based on pupils' performance across eight GCSE-level qualifications, grouped into four elements with different weightings:

The 8 Subject Slots

1. English (double-weighted): The higher grade from English Language or English Literature is double-weighted, filling two of the eight slots. The other English qualification fills one slot in the open element if the pupil takes both.
2. Maths (double-weighted): The maths GCSE grade fills two slots.
3. EBacc element (3 slots): The best three grades from sciences, computer science, geography, history, and modern or ancient languages.
4. Open element (3 slots): The best three grades from remaining approved qualifications, which can include arts, vocational subjects, or further academic subjects.

The Attainment 8 Baseline

Each pupil's KS2 SATs results are used to create an expected Attainment 8 score. This expected score is calculated from the national average GCSE performance of all pupils with the same KS2 results. A pupil's actual Attainment 8 score (the sum of their eight GCSE grades converted to a numerical scale) is then compared to this expected score. The difference is that pupil's individual Progress 8 score.

The school's Progress 8 score is the mean average of all its pupils' individual Progress 8 scores.

What the Scores Mean

Progress 8 is centred around zero. The national average is always 0 by definition. Scores above zero indicate above-average progress; scores below zero indicate below-average progress.

Progress 8 Score	Interpretation	DfE Category
+0.5 or above	Pupils make well above average progress	Well above average
+0.5 to above 0	Pupils make above average progress	Above average
0	Pupils make average progress (the national mean)	Average
Below 0 to -0.5	Pupils make below average progress	Below average
-0.5 or below	Pupils make well below average progress	Well below average

In practical terms, a Progress 8 score of +0.5 means that, on average, pupils achieved half a grade higher across their eight subjects than similar pupils nationally. A score of -1.0 means pupils achieved, on average, one grade lower across their eight subjects.

Why Progress 8 Matters More Than Raw Results

Raw GCSE results (such as the percentage of pupils achieving a grade 5 or above in English and maths) are heavily influenced by a school's intake. Schools in affluent areas with academically strong intakes will naturally have higher raw results, but this does not necessarily mean they are better at teaching.

Progress 8 strips out the effect of prior attainment. It shows you what the school adds, not what the pupils bring. This means:

• A comprehensive school in a deprived area with a Progress 8 of +0.3 is demonstrably helping its pupils achieve more than expected.
• A selective grammar school with a Progress 8 of -0.2 is, despite its high raw results, producing less progress than you would expect given its pupils' high starting points.
• Two schools with identical raw results may have very different Progress 8 scores, revealing very different levels of school effectiveness.

For this reason, Progress 8 is widely regarded as one of the most informative measures available to parents. You can explore high value-add schools on Schools Near Me, which ranks schools by how much progress they help pupils make.

Confidence Intervals

Every Progress 8 score is published with a confidence interval. This is a statistical range that accounts for the fact that a school's score is based on a limited number of pupils in any given year.

If the confidence interval crosses zero, it means the school's score is not statistically significantly different from the national average. This is particularly relevant for smaller schools, where a handful of outlier results can have a large effect on the overall score.

The DfE uses confidence intervals to determine whether a school's score is officially classified as above average, average, or below average. A school is only classified as "well above average" or "well below average" if its confidence interval does not cross the relevant threshold.

When comparing schools, it is good practice to look at scores over multiple years to see whether performance is consistent, and to check the confidence interval before drawing conclusions from a single year's data. You can view multi-year trends for any secondary school on Schools Near Me.