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Are Koreans Low-Caliber, or High-Caliber?

Korean teenagers rank among the world's best. Korean adults fall below the OECD average. The problem is not the people — it is the system that takes world-class potential and uses half of it.

Korea's problem may be not only its people but its system.

There is one strange scene you notice when you look at Korea.

The teenagers are remarkably smart.

Look at international academic assessments —

Korean students still rank among the world's best.

Good at math,

good at reading,

good at science.

University enrollment is high,

and they learn new skills fast.

Passing through fierce competition from childhood,

people equipped with high-level learning ability pour into society.

And yet, something is off.

The moment those people become adults,

enter organizations,

and step inside the social system,

the country as a whole

does not look as remarkable as that potential.

Often, it looks like the opposite.

Recent international comparisons show

that the average literacy of Korean adults,

their numeracy,

their problem-solving ability

are not as high as we tend to assume.

The generational gap in particular is considerable.

Teenagers and the young generation score high,

but when you descend to the adult average,

the ranking drops sharply.

So if I were to describe Korea very crudely,

I think it looks close to this:

Youth capability — top tier.

Average citizen capability — middle, or lower-middle tier.

And the most regrettable part

is the system that puts those people to use.

Of course, this doesn't mean the entire system is the world's worst.

Korea's administration is fast,

its digital infrastructure is good,

and its education system and industrial infrastructure are formidable.

Even so, step just a little way inside an organization

and strange inefficiencies repeat.

Seniority starts to matter more than ability,

avoiding blame starts to matter more than solving problems,

and more than trying something new,

“this is how we did it before” starts to matter.

Even when an outstanding person joins,

rather than using their ability to the fullest,

the organization often grinds them down to fit.

Don't stand out, they're told.

Wait, they're told.

Respect the order of things, they're told.

Persuade your superiors, they're told.

When something fails, the first search is for someone to blame.

And when something succeeds,

the credit is divided among many.

In this structure,

no matter how brilliant the individual,

the productivity of society as a whole struggles to rise.

I do not believe Korea's biggest problem

is its people.

There are plenty of smart students,

plenty of diligent people,

engineers and researchers who could compete anywhere in the world,

founders and specialists too.

The problem is that the structure

that would let those people fully use their abilities

has not kept up.

We recruit excellent talent

and set them to writing reports.

We hire outstanding developers

and send them to meetings.

We tell creative people

to find a precedent.

Those who bear responsibility are given no authority,

and those who hold authority are never held responsible.

In such a system,

between an individual's capability

and society's overall output,

an enormous loss occurs.

So sometimes, watching Korea, I think this:

what we need is not only smarter people —

what we need

is a system in which those smart people

can actually move.

A structure where capable people

can make decisions regardless of age or rank,

where those who deliver results

take more of the resources,

where those who fail

can try again,

where pointless approvals and reports and face-reading shrink,

and where good ideas

don't die of organizational politics.

That is what's needed.

Before demanding that Korean teenagers

study even harder,

we should first ask:

the people we raised with such effort —

is our society actually using them properly?

If we educate people to the highest standard in the world

and then, once they enter society,

allow them to use only half of that ability,

the problem is not with the students.

Nor is it with the people.

It is with the system.

And for Korea to reach its next stage,

the first thing that must change

may well be exactly that.

Appendix — Indicators on Korean education, adult competency, and the social system

1. Youth capability — top of the OECD

In OECD PISA 2022, Korean 15-year-olds scored above the OECD average in every domain: math, reading, and science.

* Math: Korea 527 / OECD average 472

* Reading: Korea 515 / OECD average 476

* Science: Korea 528 / OECD average 485

* Share of students at minimum proficiency (Level 2) or above in math: Korea 84% / OECD average 69%

In short, the basic academic capability of Korean youth is unmistakably top-tier internationally. (OECD)

2. Educational attainment — highest in the world

Per OECD Education at a Glance 2025, Korea's tertiary attainment rate among 25–34-year-olds is 71% — the highest level among OECD countries.

The OECD average is 48%. (OECD Education GPS)

In short, Korea has one of the most educated young generations in the world.

3. And yet average adult competency falls below the OECD average

In the OECD Survey of Adult Skills (PIAAC 2023), Korean adults aged 16–65 scored as follows.

* Literacy: 249 — below the OECD average

* Numeracy: 253 — below the OECD average

* Adaptive problem solving: 238 — below the OECD average

All three domains fell short of even the OECD average. (OECD)

Meanwhile, the share of adults at low proficiency was

* Literacy at Level 1 or below: 31%

* Numeracy at Level 1 or below: 28%

* Adaptive problem solving at Level 1 or below: 37%

(OECD Education GPS)

By contrast, Koreans aged 16–24 scored 276 in literacy — above the OECD average. (OECD)

Which means a substantial gap exists between the high capability of the young generation and the overall adult average.

4. Does heavy educational input actually convert into social productivity?

Korea's average annual working hours in 2022 were 1,901 — about 149 hours longer than the then-OECD average of 1,752. (OECD)

The problem is less that working hours are long than that productivity itself is low.

The OECD has repeatedly pointed to the need for structural reform in the Korean economy — SME-sector productivity, competitive structure, resource allocation. (OECD)

Therefore, rather than explaining this simply as individual citizens not trying hard enough,

we should ask whether structural losses are occurring in the process of converting high education and human capital into actual social and economic outcomes —

that question needs to be raised.

Summary

Simplified to the extreme, Korea carries the following paradox.

Youth academic capability — top tier

Young-generation educational attainment — highest tier

Overall adult real-world competency — below the OECD average

Labor input — on the high side

The socio-economic system that deploys this human capital — much room for improvement

Therefore, the point of this essay

is not “Koreans are low-caliber.”

The potential of people educated to the highest standard in the world —

how properly is our society using it?

That is the question.

Originally published on Brunch · August 11, 2026
L
Lee · Lee's Blueprint
Founder, MAEUM.io
Email [email protected]