The £157,500 Question: How KS2 Results Predict Lifetime Earnings

In July 2025, the Department for Education published research that should have been front-page news. It wasn't. So let's talk about it.

Not GCSE results. Not A-levels. Not university. The test your child takes at the end of Year 6.

The chain that starts at 11

Education outcomes don't exist in isolation. They form a chain, and KS2 is the first link:

KS2 (age 11) → GCSE (age 16) → Post-16 qualifications → Career earnings

The numbers at each link tell the story:

• Only 8% of children who miss the expected standard at KS2 go on to achieve 5 good GCSEs (grade 4+, including English and Maths)
• Children who meet the expected standard at KS2 are 6 times more likely to achieve strong GCSE passes
• By age 30, the earnings gap between those who met and those who missed KS2 standards is already visible — and it compounds

38% are missing the standard

A quarter of a million children entering secondary school behind, with the evidence suggesting most will never catch up.

The education charity NFER calls them "The Forgotten Third" — the third of children who leave primary school without the foundations they need.

The disadvantage gap makes it worse

If this were evenly distributed, it would be concerning enough. But it's not.

• At reception (age 4–5), disadvantaged children are already 4.7 months behind
• By the end of primary school (KS2), the gap has grown to 10 months
• By GCSE, it's 19.2 months — nearly two years

The gap doesn't just persist — it accelerates. And access to support isn't equal either:

This isn't about pressure

We're not telling you to drill your child harder. That's the wrong response to this data. We know that 76% of primary teachers report that SATs preparation increases stress and anxiety in their pupils. One in five children now has a probable mental health disorder — up from one in nine before the pandemic.

More pressure isn't the answer. Better preparation is.

The difference is critical: pressure means "do more, try harder, worry about the test." Better preparation means "practise effectively, build genuine understanding, feel confident on the day."

What parents can actually do

You don't need to be a teacher. You don't need to spend hundreds on a tutor. But you do need to take KS2 seriously — not because a test score defines your child, but because the data shows it shapes their options.

Start early. Make it regular. Make it bearable — better yet, make it something they'll actually choose to do. That's the challenge, and it's exactly why we built SATs Arcade.