Choosing the right educational environment for a daughter is an important decision. Many parents consider academic standards first, but increasingly they prioritise confidence, wellbeing and long-term development.
Single-sex education has long been part of the British independent school tradition. Research and experience show that all-girls education offers distinctive advantages, both academically and personally.
At Portsmouth High School, we believe single-sex education is about far more than structure. It creates an environment where girls feel secure, heard and empowered to participate fully in their learning. This belief shapes our ethos and guides every stage of a pupil’s development.
Academic focus and performance
One of the most frequently asked questions is how single-sex education impacts academic performance. Research consistently shows that girls in single-sex schools achieve strong academic outcomes.
A 2024 analysis by FFT Education Datalab found that pupils in single-sex schools demonstrated higher average GCSE attainment than those in mixed settings.
The Girls’ Day School Trust (GDST), the UK’s leading network of independent girls’ schools, reports in Why (and how) girls thrive in girls-only schools that girls in girls-only classrooms are often more confident to contribute, take intellectual risks, and deepen their understanding—factors that naturally support higher achievement.
At Portsmouth High School, our Senior curriculum combines academic ambition with a calm and purposeful learning environment, helping girls build secure foundations while developing independence in their thinking.
Broad subject choice and STEM opportunity
Another clear advantage of single-sex education is the freedom it gives girls to pursue the full range of academic disciplines.
Research from the GDST shows in The GDST Difference that girls in girls-only schools are less constrained by gender stereotypes and more likely to choose STEM subjects, including physics, computing, and advanced mathematics.
Portsmouth High School’s Senior curriculum includes mathematics, separate sciences and computer science alongside humanities, languages and the arts. We believe every subject should be equally available to every pupil. By encouraging girls to explore academic interests without limitation, ambition is broadened rather than narrowed.
This breadth of opportunity strengthens both academic development and future pathways.
Confidence in the classroom
Parents often ask whether girls are more confident in single-sex schools. Evidence shows that girls in these environments participate more actively, speak up in class, and express independent opinions without hesitation.
Research from the GDST, particularly the Girls’ Futures Report, shows that girls in single-sex schools report higher levels of confidence and feel less constrained by gender stereotypes, allowing them to take intellectual risks and explore ideas more freely.
At Portsmouth High School, confidence is nurtured through teaching that knows each pupil well and encourages every girl to question, explore, and express herself fully.
Leadership and voice
Leadership opportunities form an essential part of school life. In single-sex environments, every leadership role is held by a girl. This has a powerful impact on expectation and aspiration.
Girls see peers leading teams, speaking publicly and taking responsibility. Leadership becomes normalised. Ambition becomes visible.
Within the Portsmouth High School community, leadership is introduced progressively and thoughtfully through our co-curricular programme. We believe that giving girls responsibility in age-appropriate ways helps them develop communication skills, empathy and a strong sense of responsibility that extends far beyond school.
Wellbeing and sense of self
Well-being underpins effective learning. When pupils feel safe and understood, they concentrate, engage and flourish.
Research shows high levels of wellbeing and engagement in single-sex environments. In a setting designed specifically for girls, pupils develop a strong sense of identity and self-assurance.
We believe pastoral care underpins academic success. Supporting girls as they navigate challenges with confidence and composure is fundamental to our approach at Portsmouth High School.
A balanced perspective
Single-sex education is not the right choice for every family. Academic outcomes are shaped by many factors, including ethos, teaching quality and pastoral care.
However, the benefits of single-sex education for girls are clear. Academic focus, increased participation, broader subject choice and visible leadership opportunities combine to create an environment in which girls thrive.
Families exploring the admissions process often seek a setting where their daughter can grow in confidence while achieving strong academic outcomes. At Portsmouth High School, we believe that when girls are free to explore ideas, develop confidence and pursue ambition without limitation, they build a foundation not only for academic success, but for life beyond school.
