A child is bored in class, asks disconcerting questions, or quietly disengages for no visible reason. Someone says the word “gifted”. And that evening you find yourself searching for a children’s IQ test online.

This article is written for that moment. It starts with the unwelcome part, which is also the most useful.

Why no online test will do

The reason is not that online tests are sloppy. It is arithmetic.

An IQ score only means something relative to a reference population. For an adult, that reference is other adults. For a child it must be their own age group, because a seven-year-old and an eleven-year-old do not have the same expected performance, and comparing one against the other tells you nothing.

Online tests, this site’s included, are calibrated against an adult reference. Giving ours to a nine-year-old will produce a number, and that number will be meaningless — neither high nor low, simply without a frame.

There is a second difficulty parents underestimate. In a real assessment, much of the information comes from how the child responds: whether they give up, ask for help, check their work, talk through the problem. A screen sees none of that.

What a real assessment looks like

The term is a psychometric assessment, carried out by a psychologist. The most widely used instrument for children is the WISC, in its current edition, for ages six to sixteen; the WPPSI covers younger children.

In practice: two to three hours, often split across two sessions. The child sits one-to-one with the psychologist. There is no form to tick — there are blocks, pictures, spoken questions, sequences to complete, timed symbol tasks.

The psychologist times, scores, and watches. Interviews with the parents frame the whole thing, before and after.

The output is not a number but a profile: several indices covering verbal comprehension, visual-spatial and fluid reasoning, working memory and processing speed. Often it is the gap between indices that is illuminating, far more than the overall figure. A child who is strong in verbal comprehension and slow in processing speed is living something specific, and averaging the two would erase it.

What it costs, and the free routes

Costs vary enormously between countries and between private and public provision, so any single figure would mislead. What is consistent is the structure: private assessment is fast and paid for out of pocket, public routes are free or subsidised and involve waiting — often months.

Before paying privately, check three things in your own country: whether the school psychology service can assess your child, whether a public child mental health service offers it, and whether any private health cover reimburses part of the fee. These are commonly available and commonly overlooked.

The real question: why do you want this?

It is what the psychologist will ask, and it is worth working out before the appointment. An assessment is useful when it answers a concrete question.

Good reasons: school difficulties nobody can explain, a persistent gap between what the child seems to understand and what they produce, a request for formal accommodations, a suspected learning difficulty to confirm or rule out, visible distress.

Weaker reasons: wanting confirmation that a child is bright, settling a disagreement between adults, or looking for a reassuring explanation of a behaviour problem. In those cases the number settles nothing and can trap the child in a label.

On “giftedness”

The term has no single definition and appears in no international diagnostic classification. In practice it usually means a score above 130 — roughly one child in fifty — but some practitioners use 125, and others require an even profile across indices.

Two things are worth saying plainly. A high score does not automatically explain a child’s difficulties: plenty of gifted children are entirely fine, and plenty of struggling children score unremarkably. And identification only helps if it leads to something concrete — an accommodation, a discussed year skip, specific support. A label that changes nothing in daily life only names.

If you still want a first look

Many parents want some sense of things before committing to a process. That is understandable, but no online tool will give it to you for a child.

Something more useful is available instead: spend two or three weeks writing down what concerns you. The specific situations, the reactions, what the teacher says. On the day of the appointment that document will be worth more than any score found online — and it will save a session.

Our test is for adults, and our method page explains why a score is an estimate even then.