St Helen's School
🇬🇧 Official data · 2025Northwood, London HA6 3AS · Hillingdon
#15 of 640 all-through schools in London
#42 of 4,090 nationally
About St Helen's School
St Helen's School is a independent all-through located in Northwood, in the Hillingdon local authority of London, England. It caters for Ages 3–18 and is a girls' school. In 2025 it enrolled 1,097 students. Fee-paying independent schools. Most do not publish Key Stage results in the government performance tables.
Its Success Index (England) is 97.5 out of 100, placing it in the top 5% of all-through schools in England and 15th of 640 ranked all-through schools in London. Its strongest component is attainment 8 (98th percentile), and its weakest is a level points per entry (97th percentile).
Other published figures: pupils on roll 1,097; capacity filled 88.5%; grade 4+ english & maths 95.2%; ebacc average points 6.02.
There are 8 schools in Northwood; St Helen's School ranks 1st of 7 scored schools there.
Success Index (England) breakdown
Each component is a percentile against all-through schools across England.
- KS2: reading, writing & maths expected standard (35%)–
- KS2: higher standard (20%)–
- KS2: reading progress (10%)–
- KS2: maths progress (10%)–
- Progress 8 (20%)–
- Attainment 8 (30%)73.0
- Grade 5+ in English & maths (15%)95.2%
- A level points per entry (10%)48.1
- Community advantage (fewer pupils on free school meals) (15%)–
The Success Index (England) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for St Helen's School by the official sources.
- Pupils on roll
- 1,097
- Number of pupils in the latest school census.
- Capacity filled
- 88.5%
- Pupils on roll as a share of the school's reported capacity.
- Attainment 8
- 73.0
- Average GCSE points across eight subjects.
- Grade 5+ English & maths
- 95.2%
- Share of pupils with a strong pass in both English and maths GCSE.
- Grade 4+ English & maths
- 95.2%
- Share of pupils with a standard pass in both English and maths GCSE.
- EBacc average points
- 6.02
- Average point score across the English Baccalaureate subjects.
- A level points per entry
- 48.1
- Average points per A level entry (A* = 60, E = 10).
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Schools near St Helen's School
Closest schools by straight-line distance, with their Success Index (England).
Frithwood Primary School
Northwood · Local authority primary · Ages 3–11
374 students · 388 m away
Northwood College for Girls GDST
Northwood · Independent all-through · Ages 3–19
814 students · 560 m away
St Martin's School
Northwood · Independent all-through · Ages 3–13
337 students · 836 m away
Holy Trinity CofE Primary School
Middlesex · Local authority primary · Ages 2–11
211 students · 1.0 km away
Hillside Infant School
Northwood · Local authority primary · Ages 3–7
201 students · 1.0 km away
Hillside Junior School
Northwood · Local authority primary · Ages 7–11
210 students · 1.0 km away
Eastbury Farm Primary School
Northwood · Local authority primary · Ages 3–11
346 students · 1.2 km away
St John's School
Pinner · Independent primary · Ages 3–11
266 students · 1.2 km away
UTC Heathrow
Northwood · Academy secondary · Ages 14–19
240 students · 1.6 km away
Northwood School
Northwood · Academy secondary · Ages 11–18
1,044 students · 1.6 km away
Similar schools
Independent all-through schools in London with a comparable Pupils on roll.
Eltham College
London · Independent all-through · Ages 7–19
1,094 students
Wimbledon High School GDST
London · Independent all-through · Ages 4–19
1,085 students
Emanuel School
London · Independent all-through · Ages 10–19
1,112 students
North London Collegiate School
Middlesex · Independent all-through · Ages 4–18
1,130 students
Putney High School GDST
London · Independent all-through · Ages 4–19
1,058 students
Ibstock Place School
London · Independent all-through · Ages 3–18
1,048 students
Frequently asked questions
Is St Helen's School a good school?
St Helen's School has a Success Index (England) of 97.5 out of 100 (Top 5% of all-through schools in England) and ranks #15 of 640 in London. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does St Helen's School rank in London?
St Helen's School ranks #15 of 640 all-through schools in London and #42 of 4,090 nationally on the Success Index (England) (2025 data).
How many students attend St Helen's School?
St Helen's School had 1,097 students in 2025.
Is St Helen's School a primary school or a secondary school?
St Helen's School is classified as a all-through covering Ages 3–18. It is a independent school.
What other schools are near St Helen's School?
There are 10 schools within 15 km of St Helen's School; they are listed on this page with their Success Index (England) and distance, and can be compared side by side.