Portsmouth High School GDST, Southsea
Portsmouth High School GDST is an independent school for girls aged 2 to 19 in Southsea. It is inspected by the Independent Schools Inspectorate (ISI) rather than Ofsted; its most recent ISI inspection was a routine inspection in February 2026.
Data last updated 26 Oct 2026
Portsmouth High School GDST in detail
Portsmouth High School GDST in its own words
From the headteacher's welcome: "We have a long and unrivalled track record in educating girls, and so we understand precisely what a girl needs to be the best she can possibly be. We know, for example, that girls learn best when they feel safe, secure and happy. And where they know professional help and guidance is a constant."
The school runs a breakfast club from 7:30am and after-school care.
Coming up: an open day on Friday 6 November 2026 at 9am, an open day on Saturday 21 November 2026 and an open day on Tuesday 8 December 2026 at 9.30am. Check the school's website before you go, as dates can change.
All school open days in Portsmouth
Headteacher's welcome (school website)Wraparound care (school website)Open days on the school's site (school website)
Source: The school's own website
Results
The Department for Education's GCSE measures do not count IGCSEs, which many independent schools take instead of GCSEs, so the Attainment 8 and English and maths figures it publishes for Portsmouth High School GDST can understate its results. We do not rank or compare them; ask the school for its own GCSE and IGCSE results.
Compared with nearby schools
The nearest other independent schools to Portsmouth High School GDST are The Portsmouth Grammar School (0.4 miles); Mayville High School (0.7 miles, selective); Madani Academy (1.4 miles, Good, selective); and Ryde School with Upper Chine (5.3 miles).
The Portsmouth Grammar SchoolMayville High SchoolMadani AcademyRyde School with Upper Chine
Where pupils go next
Of the 32 students who left the sixth form in 2023/24, 75% went on to university or other higher education, 3% to apprenticeships and 9% into work.
Who goes there
In 2026, 49 pupils (11.2%) received SEN support and 0 (0%) had an education, health and care plan.
Getting there
The nearest railway station is Southsea Hoverport, about 540 metres away (roughly a 7-minute walk).
18 bus stops are within a five-minute walk; the closest is Castle Road (e-bound), 100 metres away.
The area around the school
In August 2026, police recorded 1085 crimes within a mile of the school, most often violence and sexual offences, anti-social behaviour and shoplifting. That is well above the typical figure around schools in Portsmouth (499), as is usual near a town centre.
Sources: DfE school performance data (averages: state mainstream schools); DfE destination measures; DfE school census and special educational needs statistics; NaPTAN (Department for Transport); English Indices of Deprivation 2025 (MHCLG); data.police.uk street-level crime
Key Information
DfE GIASISI Inspection Reports
Independent schools in England are inspected by the Independent Schools Inspectorate (ISI), not Ofsted.
Routine Inspection
3 February 2026
Educational Quality / Focused Compliance
28 March 2023
Regulatory Compliance
21 March 2018
Integrated
28 April 2015
At a Glance
No
Boarding
Yes
Nursery
Yes
Sixth Form
No
Special Measures
Secondary Performance (GCSE)
The Department for Education's GCSE measures do not count IGCSEs, which many independent schools take instead of GCSEs, so the Attainment 8 and English and maths figures it publishes for Portsmouth High School GDST can understate its results. We do not rank or compare them; ask the school for its own GCSE and IGCSE results.
GCSE Subjects Offered
2025/26 academic year - entries by number of pupils
How Does This School Compare?
Ranked against 5 nearby all-through schools
Keep up with Portsmouth High School GDST
Before and after school care
Clubs on Ofsted's childcare register at or near Portsmouth High School GDST.
- CSS ActivitiesAt the school · Not yet graded
- Super Camps- Portsmouth560m away · Not yet graded
Getting There
Train Stations
Ferry Terminals
Bus Stops
Safety and surroundings
Road collisions within 500 m (2021 to 2025)
- Collisions
- 60
- Fatal
- 0
- Serious
- 11
- Children hurt
- 4
Within 500 m of the school's mapped location, police recorded 60 road collisions in which someone was injured in 2021 to 2025: none fatal, 11 serious and 49 slight.
4 children aged 0 to 15 were hurt: 3 on foot and 1 in a vehicle or otherwise.
13 of the collisions happened on a weekday between 08:00 and 09:30 or 14:45 and 16:30, holidays included.
The typical figure for schools in Portsmouth is 57 (the median across 67 schools, same distance and years).
Serious and slight counts use the Department for Transport's severity adjustment, which allows for changes in how police forces record injuries; they are estimates, rounded to whole numbers. Distances are in a straight line. Source: Department for Transport, Road Safety Data (STATS19), Open Government Licence v3.0.
Commute and house prices
Capacity & Demand
School Occupancy
67%
Available places
436 pupils
650 places
214 spare places
as recorded on GIAS
Area Demand Pressure - Southsea
Based on MHCLG Live Table 122 (2024-25, last 5 years) for Southsea
Across Portsmouth council
Places available
2,178
Applications
2,140
Got 1st preference
83.4%
Got preferred school
96.1%
All secondary applications across Portsmouth council (2026/27), not just this school.
SEND & SEN Provision
SEN Overview
49
SEN Support
0
EHC Plans
11.2%
of Total Pupils
2026 academic year
Provision & Specialist Facilities
Pupils by Need Type
No need-level breakdown available
Pupil Demographics
Key Indicators
436
Total Pupils
1
Boys
435
Girls
2026 academic year
Feeder Primary Schools
Primary schools that likely feed into this school, based on proximity
Portsmouth High School GDST
Showing 10 of 15 linked schools
Questions parents ask about Portsmouth High School GDST
What are GCSE results like at Portsmouth High School GDST?
The Department for Education's GCSE measures do not count IGCSEs, which many independent schools take instead of GCSEs, so the Attainment 8 and English and maths figures it publishes for Portsmouth High School GDST can understate its results. We do not rank or compare them; ask the school for its own GCSE and IGCSE results.
When was Portsmouth High School GDST last inspected?
Portsmouth High School GDST is inspected by the Independent Schools Inspectorate (ISI) rather than Ofsted. Its most recent ISI inspection was a routine inspection in February 2026.
How many pupils go to Portsmouth High School GDST?
Portsmouth High School GDST has around 436 pupils on roll.
How do I apply to Portsmouth High School GDST?
Portsmouth High School GDST is an independent school and runs its own admissions rather than going through the local authority. Contact the school directly for entry requirements, assessment dates, fees and any bursaries.
Does Portsmouth High School GDST have a breakfast club or after-school club?
Ofsted's childcare register lists an out-of-school club at the school: CSS Activities (registered, not yet graded). There is another within a kilometre. The school may also run its own clubs, which don't have to register with Ofsted.
How many road collisions happen near Portsmouth High School GDST?
Within 500 m of the school's mapped location, police recorded 60 road collisions in which someone was injured in 2021 to 2025: none fatal, 11 serious and 49 slight. 4 children aged 0 to 15 were hurt: 3 on foot and 1 in a vehicle or otherwise. 13 of the collisions happened on a weekday between 08:00 and 09:30 or 14:45 and 16:30, holidays included. The typical figure for schools in Portsmouth is 57 (the median across 67 schools, same distance and years).
Where is Portsmouth High School GDST?
Portsmouth High School GDST is at 25 Kent Road, Southsea, Southsea, PO5 3EQ.
Source: Department for Transport, Road Safety Data (STATS19)