Parents

Gifted programmes and IQ scores

Most programmes use a cut-off around 130. Here is what that number does and does not tell you about a child, and what to do on either side of the line.

Where the number comes from

Most gifted programmes in English-speaking school systems use a cut-off around the 98th percentile, which is about 130 on a scale with a standard deviation of 15. Some use 125, some use 132, and some use a percentile on a group-administered test such as the CogAT rather than an individual IQ score.

The number is administrative rather than scientific. Nothing changes about a child between 129 and 131. The threshold exists because programmes have a fixed number of places, and a cut-off is a defensible way to allocate them.

Knowing that it is administrative rather than diagnostic is the single most useful thing a parent can understand about the process.

Why a single score is a weak basis for the decision

A child's score carries a confidence interval of roughly plus or minus five points on a good individual test, wider on a group test. A child whose true ability sits near 130 will land above the line on some days and below it on others.

Scores before about age six are less stable still. Early childhood assessment has real uses — identifying developmental concerns, informing intervention — but prediction of later academic outcomes from a preschool score is weak.

Better identification practice uses multiple sources: a cognitive measure, an achievement measure, teacher observation and work samples. Systems that rely on a single test score are known to under-identify children from backgrounds where test familiarity is lower, which is a large part of why identification practices have been revised repeatedly.

What a high score means, practically

It means the child learns some kinds of material faster than most children their age, and will probably be under-occupied in a classroom pitched at the average. That is a real problem and the main thing gifted provision exists to address.

It does not mean the child will find school easy in every subject, will be emotionally mature for their age, or is destined for anything in particular. Ability is domain-variable: a child can be two years ahead in mathematical reasoning and at grade level in written expression, and that profile is more common than a uniformly advanced one.

The research on acceleration — grade skipping, subject acceleration, early entry — is more favourable than most parents and many schools expect, with generally positive academic and social outcomes when the decision is made carefully for the individual child.

The label problem

Being told you are gifted has effects that are not all good, and they are well documented.

Children praised for ability rather than effort become more likely to avoid tasks where they might fail, because failure now threatens the label rather than just the task. This is among the more robust findings in educational psychology and it applies directly here.

Perfectionism and fear of being found out are common in identified children, particularly those who found early schooling effortless and then met something difficult without any practice at struggling.

The practical response is to treat the identification as information about provision — this child needs harder work — rather than as a description of the child. Praise the work, not the ability, and make sure the child regularly encounters things they cannot do immediately.

If the score comes back below the line

This is the more common situation and the one with the least written about it.

First, a score near the threshold is not a finding that the child is not capable of advanced work. It is a measurement with an interval around it, taken on one day, on one instrument.

Second, most gifted provision is good teaching applied at a faster pace, and good teaching is not rationed by test score. A child who is bored and under-challenged has that problem regardless of which side of an administrative line they fell on, and it is worth raising with the school in those terms.

Third, ability in a specific domain is often better served by subject-specific acceleration than by a general programme, and that route usually does not require a cognitive test at all.

Should you prepare a child for the test?

Familiarisation and coaching are different things, and the distinction matters.

Familiarisation — making sure the child has seen the format, knows what to expect, is not anxious — is reasonable and removes construct-irrelevant variance. A child whose score is depressed by never having seen a matrix item is not being measured accurately.

Intensive coaching on the specific item types is a different matter. It raises the score without raising the ability, which means a child may be placed in a programme they will then struggle in, and that outcome is worse for the child than not being placed. Several school systems have moved to less coachable instruments for precisely this reason.