Ask ten parents about single-sex education and you’ll get ten different opinions, most of them shaped by a school they went to decades ago or a headline they half-remember. The debate tends to run hot and light on evidence. So it’s worth stepping back and asking a plainer question: what does the research actually say, and what might it mean for a child growing up now?

Here are five findings worth knowing before you form a view.

1. Girls take more academic risks when boys aren’t in the room

Several studies have found that girls in single-sex settings are more willing to put their hand up, attempt harder problems and stick with subjects where a wrong answer feels exposing. The effect is clearest in subjects like maths and physics, where confidence often falls away in the teenage years. Take away the audience they feel they’re performing for, and something shifts.

Takeaway: it’s less about ability and more about the freedom to get things wrong while learning.

2. Subject choices widen, not narrow

You might expect single-sex schools to reinforce old patterns. The data often points the other way. Girls’ schools tend to send higher-than-average numbers of pupils into STEM subjects, while boys’ schools see stronger uptake in the arts and languages. Without the unspoken sense of which subjects “belong” to whom, pupils choose more freely.

Takeaway: removing gendered expectations tends to broaden horizons rather than limit them.

3. The picture is nuanced, and honesty matters

It would be misleading to claim single-sex education wins every comparison. Some large studies find the raw academic gap narrows once you account for family background and prior attainment. What holds up more consistently is the effect on attitude, participation and self-belief, which are harder to measure but arguably matter just as much.

Takeaway: be sceptical of anyone promising guaranteed results. The real advantages are quieter than that.

4. Pastoral care can be more precisely tuned

Boys and girls often hit developmental milestones at different times and respond to pressure in different ways. A school focused on one can shape its pastoral approach around those patterns rather than splitting the difference. That might mean tailored support around wellbeing, friendships or the particular anxieties that surface at exam time.

Takeaway: specialisation isn’t only about the curriculum; it shapes how a school looks after a child too.

5. Environment shapes ambition

Perhaps the most compelling finding is cultural rather than statistical. In a girls’ school, every head girl, science captain and debate winner is a girl. Leadership is simply what girls do there, because there’s no one else to do it. That everyday normality has a way of settling into how a child sees her own possibilities. Schools that build this kind of environment on purpose, such as [St Catherine’s School in Bramley|https://www.stcatherines.info/], often talk about confidence as a founding aim rather than a happy side effect.

Takeaway: children absorb what they see modelled around them, day after day.

So where does that leave a parent?

The honest answer is that no single school type suits every child. A confident, sociable child might thrive anywhere; a quieter one who shrinks in a mixed classroom might find their voice in a different setting. The research doesn’t hand you a verdict. It hands you better questions to ask on an open day: how does this school build confidence, how does it support wellbeing, and does it feel right for your particular child?

Read the studies, visit the schools, and trust what you see when you’re standing in the corridors. That combination will tell you far more than any single statistic.

For more about one school’s approach, visit https://www.stcatherines.info/.

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*This article was contributed by the team at St Catherine’s School, Bramley, an independent day and boarding school for girls aged 4 to 18 in Surrey. St Catherine’s is a member of the Girls’ Schools Association and has a long-standing focus on academic ambition, wellbeing and preparing young women for confident futures.*