Blackfen School for Girls is a girls' secondary academy in Sidcup, London Borough of Bexley, teaching 1,324 pupils aged 11 to 18. Ofsted graded quality of education as Good at its most recent inspection in March 2025. In 2024–2025, GCSE Attainment 8 was 44.1 (England 46.1). The 2025–2026 school year runs from 1 September 2025 to 17 July 2026.

Ofsted inspection

The latest published Ofsted judgement for Blackfen School for Girls.

Latest inspection
Graded inspection No single overall grade (Sept 2024+)

From September 2024 Ofsted no longer gives schools a single overall grade. These are the graded judgement areas from the latest inspection.

Quality of educationGood
Behaviour & attitudesGood
Personal developmentGood
Leadership & managementGood
Sixth formGood
S5 Inspection · Inspected 11 Mar 2025 · Published 28 Apr 2025
Read full Ofsted report ↗

Scale: Outstanding Good Requires improvement Inadequate

Term dates & holidays 2025–2026

Autumn, spring and summer terms, half-terms, INSET days and bank holidays for Blackfen School for Girls.

Blackfen School for Girls term dates calendar 2025–2026
Official term-dates calendar · 2025–2026 · source

Interactive Calendar

May 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 26 Spring Bank Holiday
June 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
July 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
August 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
September 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 1 Autumn Term 1 begins
  • 3 Students return to school
October 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 17 Autumn Term 1 ends
  • 20–31 Autumn Half Term
November 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 3 Autumn Term 2 begins
December 2025
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 19 Autumn Term 2 ends
  • 22–31 Christmas and New Year Holiday
  • 25 Christmas Day
  • 26 Boxing Day
January 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 1–2 Christmas and New Year Holiday
  • 1 New Year's Day
  • 5 Spring Term 3 begins (INSET day)
  • 6 Students return to school
February 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
  • 13 Spring Term 3 ends
  • 16–20 Spring Half Term
  • 23 Spring Term 4 begins
March 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 27 Spring Term 4 ends
  • 30–31 Easter Holiday
April 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 1–10 Easter Holiday
  • 3 Good Friday
  • 6 Easter Monday
  • 13 Summer Term 5 begins
May 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 4 Early May Bank Holiday
  • 22 Summer Term 5 ends
  • 25–29 Summer Half Term
June 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 1 Summer Term 6 begins
July 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 17 Summer Term 6 ends (Last day for students)
  • 17–31 Summer Holiday
  • 20–21 INSET days
August 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  • 1–31 Summer Holiday
  • 31 Summer Bank Holiday
September 2026
MonTueWedThuFriSatSun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 1–2 Summer Holiday

Key dates (2025–2026)

  • Autumn Term 1 begins Sep 1, 2025 Term
  • Students return to school Sep 3, 2025 Event
  • Autumn Term 1 ends Oct 17, 2025 Term
  • Autumn Half Term Oct 20-31, 2025 Holiday
  • Autumn Term 2 begins Nov 3, 2025 Term
  • Autumn Term 2 ends Dec 19, 2025 Term
  • Christmas and New Year Holiday Dec 22, 2025-Jan 2, 2026 Holiday
  • Spring Term 3 begins (INSET day) Jan 5, 2026 Inset Day
  • Students return to school Jan 6, 2026 Event
  • Spring Term 3 ends Feb 13, 2026 Term
  • Spring Half Term Feb 16-20, 2026 Holiday
  • Spring Term 4 begins Feb 23, 2026 Term
  • Spring Term 4 ends Mar 27, 2026 Term
  • Easter Holiday Mar 30-Apr 10, 2026 Holiday
  • Summer Term 5 begins Apr 13, 2026 Term
  • Summer Term 5 ends May 22, 2026 Term
  • Summer Half Term May 25-29, 2026 Holiday
  • Summer Term 6 begins Jun 1, 2026 Term
  • Summer Term 6 ends (Last day for students) Jul 17, 2026 Term
  • INSET days Jul 20-21, 2026 Inset Day
  • Summer Holiday Jul 17-Sep 2, 2026 Holiday
  • New Year's Day Jan 1, 2026 Event
  • Good Friday Apr 3, 2026 Event
  • Easter Monday Apr 6, 2026 Holiday
  • Early May Bank Holiday May 4, 2026 Holiday
  • Spring Bank Holiday May 26, 2025 Holiday
  • Summer Bank Holiday Aug 31, 2026 Holiday
  • Christmas Day Dec 25, 2025 Holiday
  • Boxing Day Dec 26, 2025 Event

Exam results & performance

DfE performance tables Official results, 2024–2025 GOV.UK ↗
44.1 Attainment 8 England 46.1
38.6% Grade 5+ English & maths England 45.4%
34 A level average score England 35
27.6% Persistent absence England 17.8%

The measures that carry the most signal. Open a section to compare Blackfen School for Girls with London Borough of Bexley and England.

Key stage 4 (GCSE) 44.1 Attainment 8 score

Year 11 results across eight qualifications, including English and maths.

This school London Borough of Bexley England

Attainment 8 score · Average across 8 GCSEs, out of 90 44.1
London Borough of Bexley 50.6 England 46.1 -2 vs England
Grade 5+ in English & maths · A strong pass 38.6%
London Borough of Bexley 53.8% England 45.4% -6.8 vs England
Attainment 8 — disadvantaged pupils 27
London Borough of Bexley 36.2 England 34.9 -7.9 vs England
Disadvantage gap · Attainment 8 points; smaller is better 19.6
London Borough of Bexley 18.8 England 15.5 +4.1 vs England
Disadvantaged pupils in the year group · Context for the scores above 13.2%
London Borough of Bexley 23.4% England 28.2%
Pupils in the year group · Small cohorts swing wildly 228
16 to 18 (A level & sixth form) 34 A level average point score

Results for students finishing post-16 study.

This school London Borough of Bexley England

A level average point score · Per entry, 50 = A* 34
London Borough of Bexley 35.75 England 35 -1 vs England
A level students · Small cohorts swing wildly 135
Attendance 27.6% Persistently absent pupils

Absence across the whole school year.

This school London Borough of Bexley England

Persistently absent pupils · Missed 10%+ of sessions; lower is better 27.6%
London Borough of Bexley 15% England 17.8% +9.8 vs England
Overall absence · Lower is better 9.8%
London Borough of Bexley 5.9% England 6.8% +3.1 vs England
What pupils do after GCSEs 95% In education, apprenticeship or work

Still in education, an apprenticeship or work a year after key stage 4.

This school London Borough of Bexley England

In education, apprenticeship or work 95%
London Borough of Bexley 93% England 92% +3 vs England
Same, for disadvantaged pupils 83%
London Borough of Bexley 85% England 83% in line with England
What students do after 16 to 18 study 82% In education, apprenticeship or work

Destinations the year after finishing post-16 study.

This school London Borough of Bexley England

In education, apprenticeship or work 82%
London Borough of Bexley 88% England 79% +3 vs England
Went to higher education 41%
London Borough of Bexley 61% England 37% +4 vs England
About this data source & caveats

Progress 8 is not published for 2024–2025. This year group missed their key stage 2 tests in 2020, so there is no baseline to measure progress from.

Attendance comparisons are pupil-weighted averages we calculate from every school’s published absence figure — the DfE absence file has no local authority or England rows of its own.

We show the headline measures only. Threshold and curriculum-policy figures — grade 4+ in English and maths, EBacc entry and points, the per-subject key stage 2 breakdown, academic and applied splits at 16 to 18 — reflect admissions and curriculum choices more than school quality, so they are left to GOV.UK. Progress measures matter most because they compare pupils with others who started at the same level; attainment on its own largely tracks a school’s intake.

Figures are the Department for Education’s official published results for Blackfen School for Girls. Results are suppressed where too few pupils were entered. England figures are the average for state-funded schools. “Top x%” is this school’s position among all schools in England with a published figure for that measure — the DfE does not publish league table rankings.

Source: Compare school and college performance, Department for Education. Contains public sector information licensed under the Open Government Licence v3.0.

Location & catchment area

Indicative catchment Other secondary schools

Indicative only. This is a nearest-school (Voronoi) estimate — the area closer to Blackfen School for Girls than to any other secondary school. Real admissions depend on the school’s own policy (straight-line distance, siblings, faith, feeder schools and available places) and change each year. Always confirm with the school and local authority admissions team.