Does Chess Make Children Better at School? What Research Shows

The honest answer is more nuanced than a simple yes

Chess is often presented as a classroom shortcut to better mathematics, reading and concentration. The research is more measured: some studies report modest gains, but a large, rigorous English trial found no lasting improvement in test scores. For schools in Nigeria and across the African diaspora, chess may still be worthwhile, but its educational case should not rest on promises the evidence cannot support.

The short answer is: possibly, but not proven

The most responsible answer is that chess can be a valuable learning activity, yet we do not have strong evidence that simply teaching children the game makes them better pupils. The distinction matters. Enjoying chess, learning to plan and practising persistence are not the same as raising marks in mathematics, reading or science.

A meta-analysis by Giovanni Sala and Fernand Gobet brought together 24 studies and 40 effect sizes. It found moderate average effects for mathematics, general cognitive measures and reading. The reported estimates were larger for mathematics than for reading, but the authors warned that the overall effect was not large enough to establish chess as a particularly effective educational intervention.

That is not a verdict against chess. It is a warning against treating a promising association as a settled cause. Children who volunteer for chess, schools that can fund tutors, and teachers who are enthusiastic about the game may differ from comparison groups before a lesson begins.

What the earlier positive evidence found

The meta-analysis reported an overall Hedges’ g of 0.338. In its separate outcome models, mathematics produced g = 0.382, cognitive outcomes g = 0.330, and reading g = 0.248. These figures describe differences between chess-instruction groups and control groups in the studies reviewed; they are not a prediction of how many marks an individual child will gain.

The review also found that longer training was associated with larger effects. Studies with at least 25 hours of chess instruction had a higher average estimate than those with less training. That pattern is interesting, but it does not show that the chess itself caused the improvement, especially when the amount and quality of teaching varied.

The main problem is the control group. Almost none of the studies in the review used an active control activity, such as music, drama or another structured club. Without that comparison, a gain could come from attention, novelty, adult encouragement or time spent in any well-run enrichment programme rather than from chess-specific thinking skills.

The Game of Chess is not merely an idle amusement; several very valuable qualities of the mind, useful in the course of human life, are to be acquired and strengthened by it.

Benjamin Franklin, American statesman and chess writer

Why the strongest school trial changed the conversation

The Education Endowment Foundation funded a two-arm clustered randomised controlled trial in England. It covered 100 primary schools and 4,009 pupils. Children received about 30 hours of chess lessons during the school day, while the study compared their later results with pupils continuing with normal provision.

The outcome was measured one year after the intervention ended, using Key Stage 2 results. The evaluation found no evidence of a positive effect on mathematics attainment. It also found no evidence of an improvement in science or reading, including among pupils eligible for free school meals. The difference between the treatment and control groups was essentially zero.

The findings were rated as high security by the foundation because the trial was large, randomised and had relatively little loss of pupil data. The result does not prove that chess can never help a child. It does mean that schools should not assume a year of chess lessons will produce a lasting rise in national test performance.

The positive studies often measured short-term outcomes soon after instruction. The English trial asked a different question: did the effect remain a year later? A benefit that fades may still matter for a lesson or a term, but it is not the same as durable academic transfer.

There are also differences in teaching. The foundation reported that tutors needed strong classroom-management and teaching skills, and that lessons worked less well when class teachers did not take an active part. A chess coach who can calculate variations is not automatically a teacher who can keep a mixed-ability class engaged.

The researchers also note a wider problem called far transfer. This is the claim that practice in one domain, such as chess, improves a loosely related domain, such as arithmetic or reading. The proposed links through concentration, working memory or problem-solving are plausible, but the causal mechanisms remain substantially untested.

What schools can reasonably promise

A school can make a defensible case for chess as an engaging club or enrichment activity. Pupils in the English evaluation generally liked the lessons, and teachers reported perceived benefits for skills such as concentration and behaviour. Those are useful reasons to offer chess, provided the programme does not displace essential teaching or create unrealistic expectations.

For Nigerian schools, the practical question is likely to be quality and purpose. A club can give children a structured way to think, compete, review mistakes and meet peers. Teachers should describe those opportunities honestly rather than promising automatic gains in examination results, and they should protect time for the curriculum that directly teaches mathematics and literacy.

The best evaluation question is therefore not “Will chess make every child cleverer?” It is “What do our pupils gain from this programme, compared with another good use of the same time?” Tracking attendance, enjoyment, participation and relevant school outcomes can help a school decide whether its own approach is working.

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