"Homework done?" — "Yes, all of it." And in the evening the online gradebook shows a failing mark that "never happened" and an unfinished assignment. The parent feels cheated twice: by the grade and by the lie. But research on children's lying says something uncomfortable: a child lies about school not because he is "spoiled" but because in this family the truth costs more than a lie — and that is the first thing worth checking. Below is one scene taken apart: what to find out before acting, what to choose between, what each choice leads to, and what is known about it.
The scene
A ten-year-old, asked "homework done?", answers "yes, all of it" and sits down with the tablet. In the evening you open the online gradebook: a failing mark for a dictation he never mentioned, and an unfinished homework assignment. Asked directly: "It's a mistake, the teacher mixed it up."
One and the same scene is several different situations. They differ not in the size of the bad grade but in what the child is hiding — the grade or your reaction to it — and in how long it has been going on. The scene is an illustration, not a real family.
What to find out before acting
- What is he hiding — the grade or the consequences? Remember how the last bad grade ended: shouting, the tablet taken away, "I'm disappointed in you". If so, he is hiding not the mark but what follows it. The study below shows that where children are punished, they lie more often and hold on to the lie more firmly.
- A one-off lie or a system? One "it never happened" out of fear is an episode. Weeks of hidden grades, deleted messages from the teacher, a signature "for mum" is a system, and it is handled differently.
- What is behind the grade itself? He did not understand the topic, cannot keep up, is afraid of the teacher, fell out with a classmate. The lie is a symptom, but so is the bad grade; treating only the lie is pointless.
- What does he consider your business? From nine or ten a child divides life into zones: what he must tell you and what is "mine". Grades often fall into the disputed zone, and it is worth finding out where, in his view, the border runs.
- Does he have a safe way to tell the truth? If every honest account of school ends in a post-mortem, lying is not a vice but a rational choice for a ten-year-old.
The forks: what you can do and what each one costs
If the lie is a one-off — about one specific grade that "never happened"
Action. Do not set a trap ("are you sure? what if I open the gradebook?") — you already know, and a trap question only adds a second lie. Say that you know, without triumph. Separate two topics. The first is the grade: what exactly he did not understand and how to fix it — that is a task, and you solve it together. The second is the lie: that is about trust, and the consequence here is not punishment for the grade but a conversation about how to tell you next time. Agree on a rule: if there is a bad grade, he tells you himself the same day, and the conversation happens without shouting.
Cost. Giving up punishment for grades. As long as a bad grade is punishable, hiding it pays — and no talk about honesty will outweigh that.
What to watch. Whether he tells you himself next time. That is the only real measure — not the number of bad grades, but the number he told you about himself.
If the hiding is systematic — weeks, forged signatures, deleted messages
Action. Not secret surveillance of the gradebook but open monitoring by rule: "I look at the gradebook every Friday, you know that." Understand why school is failing — with the teacher, not only with the child: a tutor, the workload, a conflict. Lower the price of truth: the reaction to a bad grade becomes predictable and calm, and this is announced out loud. Separately, about lying as a system: trust is rebuilt in stages (a weekly report first, then less often), not by endless control.
Cost. Time for school — weeks, not one evening. And admitting that your reaction to bad grades is part of the cause, not only a consequence.
What to watch. The ratio of "he told us" to "we found out". If it shifts towards the first, it is working.
If the lie is a response to your style — grades get shouting or punishment
Action. Change your own reaction first, and announce it: "a bad grade is not a disaster, we work it out together; a lie is a problem, and we discuss it separately." The consequence for a lie is not isolation and not a confiscated phone but repair: he tells the story himself, he arranges the retake with the teacher himself. Hold the new rule for two or three months, even while the bad grades continue: the child must see that the truth costs less than a lie.
Cost. Living through bad grades without an outburst, and accepting that for the first weeks he will test whether the rule is for real.
What to watch. Whether the lying decreases after a month or two. Whether conversations about school start to appear that he begins, not you.
There are no ready-made lines here on purpose: every family has its own words. All three forks mean the same thing: the bad grade and the lie are handled separately, and the truth about school has to cost less than a lie — otherwise the child's choice is predictable.
What may be behind it
- Fear of consequences. The most common cause: the last bad grade went badly — so this one is better hidden.
- Shame. "I'm stupid" — and the grade stops being information and becomes a verdict he does not want to show.
- Defending his own zone. "School is my business": from the pre-teen years a child asserts the right not to tell everything, and grades get caught up in it.
- Overload or not understanding. He fell behind on a topic, cannot keep up — and "all done" is easier than admitting he is not coping.
- A conflict with the teacher. The grade seems unfair, and "the teacher mixed it up" is not quite a lie in his picture of the world.
- Impulse. "Yes, all of it" — so that he is let go to the tablet now, and the sorting out comes later. A great many ten-year-olds lie this way, and it is not character but a short horizon.
What research says
Where children are punished, they lie more often — and hold on to the lie better
Who and on whom. Victoria Talwar and Kang Lee, 2011, Child Development. 84 three- and four-year-olds in West Africa, from a school with corporal punishment and a school without; a natural experiment.
What they found. The children were told not to peek at a toy and left alone; most peeked. Asked "did you peek?", the majority of peekers from the punitive school lied, significantly fewer from the non-punitive one. The punitive-school children were also better at maintaining the lie under follow-up questions.
What it does not prove. Preschoolers, one country, schools rather than families. But the mechanism carries over: punishment does not teach children not to lie — it teaches them to lie more convincingly.
From 8 to 16 the question is not whether a child can lie, but why
Who and on whom. Angela Evans and Kang Lee, 2011, Developmental Psychology. Children and adolescents aged 8–16.
What they found. Participants were left alone and asked not to look at the answers to a test; most looked. They were then asked whether they had cheated. The sophistication of the lies — how consistently a child held the story — was related to working memory, inhibitory control and planning; the decision to lie itself was not related to these skills.
What it does not prove. A laboratory, one country, one point in time. But for the scene above the conclusion is direct: a ten-year-old can hold "the teacher mixed it up" consistently — everyone has the ability; what distinguishes families is not the ability but whether the lie pays.
Adolescents tell their parents more where there is trust and acceptance
Who and on whom. Judith Smetana and colleagues, 2006, Child Development. 276 ninth- and twelfth-graders (mean ages 14.6 and 17.4) and 249 of their parents.
What they found. Adolescents felt obliged to tell their parents about matters of safety, and far less about personal ones; parents thought they were owed more disclosure than adolescents thought. Greater trust, a felt obligation to disclose and, for personal matters, more parental acceptance predicted more disclosure and less secrecy. Mothers were told more than fathers.
What it does not prove. Older than the child in the scene, one country, self-reports. But the direction is the same: openness grows not from control but from trust — and from the story not ending in a disaster.
For a parent the three studies point the same way: by ten every child has the ability to lie about school; whether the lie pays is decided by the adults' reaction. Punishment for a grade makes lying rational; trust and a predictable reaction make the truth safe.
By age
| Age | What changes |
|---|---|
| 6–8 | "Nothing happened at school" is more often an inability to retell the day than a lie. Ask specifically ("what was set for maths?"), do homework alongside, do not turn the first grades into a question of love. |
| 9–11 | The case above is about this age. Lies are coherent and thought through; an online gradebook makes them pointless — if the monitoring is open and by rule. Separate the grade from the lie, agree on "I tell you myself". |
| 12–14 | More secrets — the norm of growing up, not a sign of trouble. Agree on zones: safety — always; grades — once a week, together; personal — his. On rules a teenager will accept — in the case on boundaries for a teenager. |
| Any | If conversations about school are only about grades, grades are exactly what will be hidden. Ask about people, lessons and events more often than about marks; on growing an interest in learning — in the piece on learning. |
Where culture comes in. In some families and countries grades are the whole family's business and the subject of a daily report; in others, after primary school they are the child's own responsibility; in some places the online gradebook is open to parents around the clock, in others it does not exist. The forks above do not argue with that: in any system the truth has to cost the child less than a lie — otherwise he will choose the lie.
When to see a specialist
A hidden bad grade is part of growing up. Take notice if the lying has become total — not only about school but about everything; if behind the hiding there is panic about school, stomach aches in the morning, refusal to go — see the case on not wanting to go to school; if grades have dropped sharply and the child has withdrawn — first a conversation with the teacher and the school counsellor, then, if needed, a child psychologist. Systematic forging of signatures and documents at 13–14 is also a reason for a consultation, not only for punishment.
What a child learns when a bad grade brings no punishment and a lie brings a conversation
That the truth is safe and costs less than a lie. That a bad grade is a task with a solution, not a verdict. And that the parent stands with him against the problem, not against him. On why children lie and how to answer a lie at a younger age — in the case on children's lies.
Sources
- Talwar V., Lee K. A punitive environment fosters children's dishonesty: A natural experiment. Child Development, 2011, 82(6), 1751–1758. doi:10.1111/j.1467-8624.2011.01663.x
- Evans A. D., Lee K. Verbal deception from late childhood to middle adolescence and its relation to executive functioning skills. Developmental Psychology, 2011, 47(4), 1108–1116. doi:10.1037/a0023425
- Smetana J. G., Metzger A., Gettman D. C., Campione-Barr N. Disclosure and secrecy in adolescent–parent relationships. Child Development, 2006, 77(1), 201–217. doi:10.1111/j.1467-8624.2006.00865.x
The scene is an illustration, not a real family. This material does not replace an in-person consultation with a specialist.