Blackfen School for Girls

  • Secondary
  • Academy
  • Ages 11 to 18
Ofsted judgements: Good

Blackfen Road, Sidcup, DA15 9NUOpen in maps (opens in a new tab)

Blackfen School for Girls is a secondary school in Bexley for ages 11 to 18. It is one of the 90 schools in Bexley. It ranks 10th of 16 secondary schools in Bexley. Its latest Ofsted inspection, in March 2025, graded each key judgement and gave no overall Ofsted rating.

Ofsted inspection

Inspected 11 March 2025, report published 28 April 2025

This inspection graded each key judgement and gave no overall effectiveness grade.

Quality of education
Good
Behaviour and attitudes
Good
Personal development
Good
Leadership and management
Good
Sixth form provision
Good
Safeguarding
Met

What Ofsted said

From the inspection on 11 March 2025

Blackfen School for Girls fosters a welcoming and friendly environment. Staff know their pupils well and have high expectations of them. Staff provide daily care and support when needed. Most pupils are polite and respectful towards adults and each other. Pupils feel and are kept safe and know who they can talk to about any concerns they have. Bullying is rare but, if it does occur, is resolved quickly. A growing number of pupils attend additional activities such as public speaking, art and volleyball. The school offers an ambitious range of residential visits including a ski trip to the south of France and opportunities for the pupils to perform at Disneyland Paris. Students in the sixth form take on leadership roles such as mentorship of younger pupils. These experiences enrich pupils' lives and help them experience a variety of opportunities beyond the classroom. All pupils, and students in the sixth form, receive high-quality independent advice on their next steps as part of the exceptionally well-organised careers programme. Many pupils were effusive in their praise for the support they receive in considering future careers options.

What the school should improve

  • The curriculum in some subjects is not implemented with sufficient precision. In these areas, pupils do not develop the same depth of knowledge and understanding and achieve less well, including in national examinations. The school should ensure that the curriculum is delivered with consistent rigour. This includes checking that staff have the necessary subject knowledge to explain ideas with clarity and make effective use of assessment to check understanding, identify and correct misconceptions.
  • The systems for managing behaviour are sometimes not applied consistently. As a result, there are different expectations, including about pupils' use of their mobile telephones and arriving to lessons on time. The school should ensure that the expectations for behaviour are applied consistently across the school.
  • The provision for some pupils with SEND who attend mainstream classes is not consistently matched to their needs and starting points. As a result, these pupils are sometimes not supported to access the curriculum and achieve well. The school should check that the adaptations chosen help pupils learn and remember more.

Exam results

GCSE results (key stage 4), 2024/25

228 pupils in the year group

Attainment 8 score44.1

44.1, 2 below the England average of 46.1.

Grade 5 or above in English and maths38.6%

38.6%, 6.8 percentage points below the England average of 45.4%.

Grade 4 or above in English and maths61%

61%, 3.8 percentage points below the England average of 64.8%.

Pupils entering the EBacc21.9%

21.9%, 18.6 percentage points below the England average of 40.5%.

EBacc average point score3.63

3.63, 0.46 below the England average of 4.09.

A level results (key stage 5), 2024/25

135 students

Average point score per A level entry34.00

34.00, 1 below the England average of 35.00.

Average A level grade C+, England average B-

Pupil numbers and mix

1,324 pupils on roll, with places for 1,500

Eligible for free school meals14.4%

14.4%, 12.1 percentage points below the England average of 26.5%.

English as an additional language18.1%

18.1%, 3.5 percentage points below the England average of 21.6%.

Special educational needs support12.2%

12.2%, 2.6 percentage points below the England average of 14.8%.

Education, health and care plan4%

4%, 2 percentage points below the England average of 6%.

Schools near Blackfen School for Girls

SchoolDistanceOfstedResults
Bexley Grammar School0.6 milesOfsted: OutstandingAttainment 8: 74.7
Hurstmere School0.7 milesOfsted: Requires improvementAttainment 8: 42.1
Chislehurst and Sidcup Grammar School0.9 milesOfsted: GoodAttainment 8: 75.6
Townley Grammar School1 mileOfsted: OutstandingAttainment 8: 75.0
Harris Academy Falconwood1 mileOfsted: GoodAttainment 8: 47.3

School details

School type
Academy converter
Sector
Academy
Trust
BLACKFEN SCHOOL FOR GIRLS
Age range
11 to 18
Gender
Girls
Sixth form
Yes
Headteacher
Ms Carrie Senior
Address
Blackfen Road, Sidcup, DA15 9NU
Local authority
Bexley
URN
137965

School details from Get Information about Schools, 17 September 2026. Ofsted outcomes published to 31 August 2026. Exam results for 2024/25 from the Department for Education. Pupil mix from the school census, 2025/26.