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A student bullies another child. A teenager joins a gang. Students sell drugs to classmates. At what point does this stop being a school disciplinary problem and become a criminal matter?
Anyone who watched the 2026 Korean Netflix series Teach You a Lesson will recognise the question.
The series takes viewers into schools where bullying is no longer just name-calling or a playground fight. There are violent school gangs, abuse of power, illicit pills, exploitation and students whose actions can have very adult consequences. Netflix itself describes the fictional Educational Rights Protection Bureau as intervening when students, teachers or parents cross the line, while later episodes involve illicit pills and a violent student-run gang.
But remove the fictional inspectors and dramatic confrontations and one uncomfortable real-world question remains:
When does a child become old enough to be held criminally responsible?
There is no universal answer.
In Malaysia, the criminal-responsibility framework begins as young as 10.
In South Korea, ordinary criminal punishment begins at 14.
The numbers alone are striking.
But the law behind them is considerably more complicated.
Malaysia: Can Criminal Responsibility Really Begin at 10?
For many Malaysian parents, this is probably the most surprising part.
It is easy to assume that a child cannot be criminally responsible until 16 or 18.
That is not what Malaysia’s Penal Code says.
Once a child is above 10, however, the position changes.
So saying simply “a 10-year-old can be treated like a criminal in Malaysia” would be misleading.
The law contains an important maturity safeguard.
For a child between 10 and 12, the question is not merely:
How old are they?
It is also:
Did this particular child have sufficient maturity to understand what they were doing and its consequences?
That is very different from treating a 10-year-old as though he or she were an adult offender.
Criminal Responsibility Is Not the Same as Going to Prison
This distinction is crucial.
A child being capable of criminal responsibility does not automatically mean that the child can simply be sentenced in the same way as an adult.
Malaysia’s Child Act 2001 provides a separate juvenile-justice framework.
So Malaysia effectively contains several different age questions:
Under 10: no criminal responsibility.
Above 10 but under 12: responsibility depends upon sufficient maturity.
Under 14: imprisonment is prohibited.
Under 18: the person remains a child for the purposes of the child-justice framework.
That is why reducing the entire Malaysian position to “the age is 10” tells only part of the story.
But Malaysia Now Has Another Juvenile-Justice Problem
While Sweden is moving towards tougher treatment of some young offenders, Malaysia is simultaneously debating whether part of its own system can be too severe.
The controversy concerns section 97 of the Child Act 2001.
This section applies where a child is convicted of an offence that would otherwise carry the death penalty.
A child cannot be sentenced to death. Instead, section 97 allows detention “at the pleasure” of the Yang di-Pertuan Agong, Ruler or Yang di-Pertua Negeri, depending on the circumstances.
The controversial part is that the provision does not itself give the child a fixed end date for that detention.
And in 2026, that became a major legal issue.
Seven Former Juvenile Offenders Went to Malaysia’s Federal Court
The court held that the provision remains legally valid and that detention “at the pleasure” falls within the prerogative powers of the Ruler.
But the decision did not end the controversy.
Malaysia’s Children’s Commissioner subsequently called for urgent reform, arguing that indefinite detention raises serious concerns about legal certainty, proportionality, rehabilitation and reintegration.
SUHAKAM noted that some people who committed offences while they were children have reportedly remained detained for 15 to more than 25 years, with some now over 40 years old.
That produces an extraordinary contrast.
Malaysia allows criminal responsibility to begin at a relatively young age.
Yet for the most serious cases, the country is now asking whether children can remain trapped in a punishment framework that does not provide enough certainty about when their detention will actually end.
Malaysia’s Government Is Now Reviewing the Law
This is no longer merely an academic argument.
The government said it was considering several reforms, including:
- establishing a clearer period of detention;
- introducing annual review mechanisms;
- strengthening rehabilitation;
- improving reintegration of children into society; and
- ensuring that the law balances justice, public safety and the welfare of the child.
The government also confirmed that section 96, dealing with imprisonment of children, was being reviewed alongside section 97 for consistency.
That is significant.
Malaysia is not currently debating whether a child who commits a very serious offence should face consequences.
The harder question is:
How severe should those consequences be when the offender was still a child?
South Korea: The Criminal Punishment Line Is 14
Now return to Teach You a Lesson.
South Korean law takes a different approach.
Under Article 9 of South Korea’s Criminal Act, an act committed by a person under 14 years old is not punishable. (Seoul Law Group)
That means an ordinary criminal punishment cannot be imposed merely as though the offender were an adult criminal when the child is below 14.
But again, that does not mean younger children simply face no consequences.
South Korea has a separate juvenile framework under which children can be subjected to protective proceedings and interventions.
That distinction becomes particularly important in the kinds of situations portrayed in Teach You a Lesson.
Consider a 13-year-old involved in a violent school gang.
Or a student helping distribute illicit drugs.
Or children systematically attacking and exploiting other pupils.
The fact that the offender is below the ordinary age of criminal punishment does not make the conduct harmless.
Instead, juvenile justice attempts to answer a different question:
What should society do with a child who has committed something extremely serious but whom the law does not yet consider fully punishable as an ordinary criminal?
Then Sweden Changed the Debate
Sweden has now pushed this question into completely new territory.
Historically, Sweden’s age of criminal responsibility has been 15.
But Swedish authorities have become increasingly concerned about serious organised crime involving very young people, including children being recruited or exploited by criminal networks.
The Swedish government’s own policy statements have described children being used by criminal networks to commit serious offences.
That created a politically difficult question:
What happens when organised criminals deliberately use children because the children themselves fall below the normal age of criminal responsibility?
Sweden has now answered that question with a major reform.
Sweden Has Not Simply Made Every 14-Year-Old Criminally Responsible
This point is extremely important.
The change is initially intended to operate for five years and is due to take effect, in most respects, on 10 September 2026.
It is therefore incorrect to say simply: “Sweden has lowered its criminal responsibility age to 14 for everything.”
It has not.
The lower threshold targets serious offending.
The legislative work underlying the reform identifies serious offences through a threshold linked to crimes carrying a minimum punishment of four years’ imprisonment or more.
So the ordinary 14-year-old involved in relatively minor wrongdoing has not suddenly become equivalent to an adult criminal.
The reform is designed principally for the most serious cases.
Sweden Is Doing More Than Changing One Age
The reform is also much wider than the headline suggests.
The Swedish Parliament approved several tougher rules for young offenders.
These include:
- lowering criminal responsibility to 14 for serious offences for five years;
- reducing the sentencing discount given to offenders under 18;
- abolishing the youth sentencing reduction for young adult offenders;
- increasing the maximum sentence for crimes committed before age 18 from 14 years to 18 years’ imprisonment;
- strengthening youth supervision;
- allowing longer periods of home confinement; and
- tightening consequences where young offenders fail to comply with youth-care or youth-service sanctions.
This is therefore not simply a technical amendment to an age limit.
It represents a broader Swedish shift towards a tougher criminal-justice response to serious youth offending.
Malaysia 10. Korea 14. Sweden 14. But the Numbers Can Mislead
At first glance, the comparison seems simple:
| Country | Key threshold |
|---|---|
| Malaysia | Criminal-responsibility framework begins at 10, subject to the maturity rule for children above 10 but under 12 |
| South Korea | Ordinary criminal punishment begins at 14 |
| Sweden | Normally 15, but from September 2026 certain serious offences committed at 14 fall within criminal responsibility |
But numbers alone do not tell us which country is “toughest”.
Malaysia’s threshold starts younger, yet imprisonment is separately restricted and juvenile procedures apply.
South Korea draws the ordinary criminal-punishment line at 14 but retains juvenile protective mechanisms below that age.
Sweden historically used 15 but is now carving out a special exception for some serious offences committed by 14-year-olds.
The systems are therefore addressing different parts of the same problem.
What If the Students in Teach You a Lesson Were Real?
This is where the fictional series becomes an interesting legal thought experiment.
Imagine that a secondary-school student:
bullies another pupil repeatedly;
seriously assaults someone;
joins a violent student gang;
distributes drugs to classmates; or
helps older criminals carry out serious offences.
Should the answer depend completely on whether that student is:
13 years and 11 months old
or
14 years and one month old?
Law needs clear age limits because people need to know when criminal responsibility begins.
But human maturity does not change overnight on a birthday.
That is one reason juvenile justice is so difficult.
“They’re Only Kids”… But What About the Victim?
One side of the debate focuses, correctly, on the child offender.
Children have developing brains.
Their judgment is different from that of adults.
Some are manipulated by adults.
Some grow up in violent environments.
Some are recruited precisely because sophisticated criminals know they are legally vulnerable.
Rehabilitation must therefore remain central.
But juvenile justice has another child to consider: the victim.
What if the person being beaten, terrorised, sexually abused, extorted or sold drugs is also a child?
Saying: “The offender is only a child.”
does not make the victim’s harm disappear.
This is perhaps the hardest part of the debate.
A child offender can simultaneously be someone society should protect and someone from whom another child needs protection.
What If Criminal Gangs Know the Age Limit Better Than Children Do?
Sweden’s reform highlights another modern problem.
Age thresholds can create incentives.
If organised criminals know that a 13- or 14-year-old faces substantially different consequences from an adult, recruiting children can become part of the criminal strategy.
The child may therefore be both:
a perpetrator
and
a victim of exploitation.
Merely increasing punishment cannot solve that problem.
But simply refusing to recognise the seriousness of the offence may not solve it either.
That is why the policy debate has moved beyond the simplistic choice between:
“punish the child”
and
“protect the child.”
A serious juvenile-justice system often has to do both.
Malaysia Is Facing the Opposite Question
This makes the Malaysian development especially interesting.
Sweden is asking:
Should very young children who commit exceptionally serious crimes become subject to criminal punishment earlier?
Malaysia is asking:
Once we decide to punish a child for an exceptionally serious crime, how long and under what safeguards should we be allowed to detain that person?
Those are almost opposite ends of the same problem.
One concerns the beginning of criminal responsibility.
The other concerns the limits of punishment after responsibility has already been established.
And Malaysia’s July 2026 review of section 97 shows that juvenile justice does not end when the court says “guilty”.
What happens afterwards matters just as much.
Is 10 Too Young? Is 14 Old Enough?
There is no scientifically perfect birthday on which a human being suddenly becomes morally and legally responsible.
That is ultimately why different countries draw different lines.
Malaysia uses an unusually young starting point but adds a maturity test for children above 10 and under 12.
South Korea uses 14 for criminal punishment.
Sweden traditionally used 15 but has now decided that some offences are serious enough to justify criminal responsibility at 14.
Each model reflects a different balance between:
accountability;
child development;
rehabilitation;
victims’ rights;
public safety;
and increasingly, the exploitation of children by organised crime.
The Question Parents Should Really Ask
The biggest misunderstanding may be believing that:
“Until 18, they’re just children, so criminal law doesn’t really apply.”
That is simply not true.
A person can remain legally a child while still facing extremely serious consequences for criminal conduct.
What those consequences look like depends on the country, the child’s exact age, the seriousness of the offence, maturity, available juvenile measures and the sentencing framework.
For Malaysian parents in particular, the important fact is not simply that “the age is 10.”
It is this:
Criminal responsibility can begin long before adulthood, but the law is also supposed to recognise that a child is not an adult.
That balance is becoming harder to maintain as the crimes involving young people become more serious.
So When Does “Just a Kid” Stop Being Enough?
Perhaps that is the real question raised by Teach You a Lesson, Sweden’s new law and Malaysia’s current reform debate.
A child who commits a serious crime is still a child.
But the consequences suffered by the victim are still real.
Society cannot pretend either fact does not exist.
Sweden has decided that for some serious crimes, 14 is no longer too young for criminal responsibility.
South Korea continues to draw its ordinary criminal-punishment line at 14.
Malaysia permits criminal responsibility to begin from 10, subject to important protections for younger children, while simultaneously reconsidering whether its most severe juvenile detention mechanism provides enough certainty, review and opportunity for rehabilitation.
Three countries.
Three very different approaches.
But one increasingly urgent question:
When a child commits an adult crime, how should the law respond?
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This article is provided for general information, legal awareness and comparative discussion only. It does not constitute legal advice. Juvenile criminal responsibility and sentencing depend on the facts of each case and the applicable law in each jurisdiction.
27 August 2026