Lets Rethink Education: What Happens when you spend 5% more on Education?

Now that we’ve mapped the raw cost of funding state education at private-school levels, it’s time to answer the inevitable question:

What does this do to the economy?

Do we spark a boom?
Cause a recession?
Redistribute things a bit and move on?
Or — as usually happens — a messy combination of all three?

This section walks through the economic plumbing behind a 5%-of-GDP shift toward education:

• why GDP doesn’t suddenly explode just because government spending rises
• why the short-run effect is a small dip rather than a catastrophe
• why private-school GDP doesn’t “vanish” in the process
• and most importantly, why the long-run human-capital payoff dwarfs everything else

If Part I dealt with simple arithmetic, Part II deals with the thermostat and electrics of the entire house.

It’s where the short-term story gets mildly boring —
and the long-term story gets extremely interesting.

Onwards.

The Economic Mechanics Behind a 5%-of-GDP Shift Into Education

Now we get into the guts of the thing — the bit where people assume the entire UK economy either collapses into a sinkhole or transforms into Finland overnight. Reality is, as usual, annoyingly in the middle.

When the government starts shifting spending on this scale, three economic effects kick in: the technical accounting effect, the short-run “ouch, taxes” effect, and the long-run “oh wow, human capital actually matters” effect.

Let’s take them in that order.

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The Short-Run Effect: Why GDP Doesn’t Rocket Just Because Spending Does

At first glance, you might assume that adding £150bn to education spending would give GDP a nice shove upwards. And if the money were borrowed — maybe. But here we’re funding it with taxes, which has a nasty habit of taking money out of people’s pockets.

Economists summarise this in the world’s most uninspiring identity:

GDP = C + G + I + (X − M)

You raise G (government spending), good. But you reduce C (consumer spending), also true. The two push in opposite directions.

So what happens?

You get… not much. A reshuffle of activity rather than a boom.

Parents who once paid £20k to private schools now pay it in tax. The government then spends it on teachers, buildings, equipment. GDP just sighs and moves on.

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Why There’s a Short-Run Dip Instead of a Boom

Yes, education spending has one of the highest multipliers in the public sector. Hire a teacher, pay a contractor, fix a roof — all that money bounces around the economy.

But the tax rise that funds it? That has a multiplier too, and it’s less fun:

Tax multiplier: ~−0.4

Meaning: £1 in new taxes chops about 40p off GDP in the short run.

So applying that to our big number:

£150bn × 0.4 ≈ £60bn GDP drag

Meanwhile, not all of the £150bn has high multipliers. Only the parts that hire staff, revive empty buildings, and pay contractors do. That contributes roughly:

≈ +£24bn GDP

Net effect:

About a 1% temporary dip in GDP.

No apocalypse. No rocket ship. Just a slightly grumpy economy adjusting to its new weight class.

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The Reallocation Effect: Education Still Happens, Just in a Different Column

One of the biggest misunderstandings is that if you “abolish private schools” (or, in this scenario, simply make them unnecessary), their entire contribution to GDP disappears.

It doesn’t.

Private schools currently generate:

• ~£10bn/year in fee income
• ~£16.5bn/year in gross value added

In a universal state system funded at private levels, that activity doesn’t vanish — it moves from:

Private consumption → Public consumption

The same teaching happens, the same wages are paid, the same lunches are served — but the line on the spreadsheet changes. GDP doesn’t particularly care.

So no, we don’t “lose” private schools’ economic contribution. It simply shifts category.

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Redistribution: Who Feels It?

Now here’s where people get twitchy.

• Parents who currently pay private fees? They gain disposable income.
• Everyone else? They pay more tax.

The economy as a whole barely notices this redistribution — but individuals certainly do. This is why this whole conversation is ultimately political, not just economic.

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The Long-Run Growth Effect: Education Is a Cheat Code

If the short-run story feels a bit “meh”, here’s the good part.

Education investment is one of the few public spending categories that delivers sustained, compounding, unequivocal returns. We’re talking long-term, economy-shaping effects — not just warm fuzzy feelings or nicer classrooms (though those matter too).

Here’s what decades of research show:

• A modest improvement in national test scores (≈ ¼ standard deviation) → +3–6% GDP
• Better-educated workers → higher productivity for 40+ years
• Quality schooling → lower crime, better health, longer working lives
• Countries with strong education systems → higher innovation and income

When translated into UK terms:

If we genuinely lifted educational outcomes, long-run GDP could be 5–10% higher than the “do nothing” path. That’s £150–300bn a year.

To put that bluntly:

The long-run gain dwarfs both the annual cost and the short-run GDP dip.

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Human Capital vs. Tax Drag: This Is Why the Long Run Wins

It’s fashionable in some circles to say higher taxes hurt growth. And yes, badly designed taxes can. But the international evidence is not on the “low tax = high growth” side of the argument.

Countries that spend heavily on education — Denmark, Sweden, Finland — have:

• Higher productivity
• Higher wages
• Better social outcomes
• Strong long-term growth

The UK, meanwhile, has been underinvesting for decades. Our productivity numbers reflect that. Our crumbling estate reflects that. Our stagnant wages reflect that.

This is not just a spending problem — it’s a growth problem.

If we want a more prosperous UK, investing in people is the one thing the evidence absolutely screams at us to do.

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A Quick Reality Check: What If We Did Nothing?

Before we get too deep into classrooms and teachers, let’s imagine the alternative: we maintain today’s funding levels and hope for the best.

This produces:

• Bigger class sizes
• More RAAC-style disasters
• Higher teacher burnout
• Worsening attainment gaps
• Lower productivity growth

Doing nothing is not neutral — it has a cost. A large, invisible, long-term cost that drags on the whole economy.

Investing in education, by contrast, is one of the few policies that:

• reduces inequality
• raises growth
• improves health
• strengthens democracy
• and gives every child an actual chance

All in one go.

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Now that we’ve established the economic “why”, let’s move on to the practical “how”.

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