Chislehurst and Sidcup Grammar School

What Chislehurst and Sidcup Grammar School does

Chislehurst and Sidcup Grammar School (CSGS) is a state-funded selective grammar school located at Hurst Road, Sidcup, Kent, serving approximately 1,000-1,200 pupils aged 11-18 across Years 7-13. Founded in 1931 through the merger of Chislehurst Grammar School and Sidcup Grammar School, it operates within the UK state education system and admits students via the 11+ examination for Year 7 and a direct application process for Sixth Form entry, administered through the Bexley Local Authority. The school delivers GCSE and A Level programmes alongside an extensive extracurricular portfolio including rugby (its flagship sport), cricket, tennis, netball, drama, music, dance, the Duke of Edinburgh Award Scheme, and a Young Enterprise company programme. Pastoral care is organised around year-level Heads of Learning supported by Pastoral Support Assistants across Key Stages 3, 4, and 5.

CSGS is led by Headteacher Nigel Walker and governed by a Governing Body of parent, staff, and community governors under oversight of the Department for Education. Revenue is derived from Local Authority per-pupil funding with no tuition fees charged to students; supplementary income is generated through a facility-hire partnership with Vivify Venues, which commercialises out-of-hours use of the campus's sports facilities, classrooms, drama studios, lecture theatre, MUGA, and event spaces. The school's underlying technology infrastructure is limited to standard educational tools — a website (csgrammar.com), SharePoint-based student intranet, Google Analytics, ParentPay and WisePay payment platforms, and social media accounts — with no proprietary platforms or technology products. Distribution and admissions run entirely through Bexley Local Authority and direct school applications, supported by open days, virtual tours via Virtual School Tour, and digital prospectuses.

The school differentiates on academic outcomes (ranked 14th out of approximately 3,500 English state secondary schools by The Telegraph, with 71.5% of GCSE grades at 7-9 and 73% of A Levels at A*-B in 2025) and extracurricular excellence, including Top 25 State Schools for Cricket in The Cricketer Schools Guide 2025 and 2026, LTA County School of the Year in 2025, and a U14 London Youth Games rugby championship in 2025. It maintains strategic partnerships with Bexley District for sports coaching, Sidcup RFC and Dartfordians RFC for rugby development, the Marlborough School Partnership for learning mentors, and Virtual School Tour for digital admissions marketing.

Name

Chislehurst and Sidcup Grammar School

Legal name

Chislehurst & Sidcup Grammar School

Website

https://csgrammar.com

Company type

Private

Founded year

1931

Operating status

Operating

Headcount range

51–100 employees

Short description

Chislehurst and Sidcup Grammar School is a state-funded selective grammar school in Sidcup, Kent, founded in 1931, serving pupils aged 11-18 in the Bexley borough with no tuition fees, funded by the Local Authority and ranked 14th of 3,500 English state secondary schools.

Ownership category

akta.pro rank

Product category

Secondary Education (Grammar School)

NAICS

Elementary and Secondary Schools (6111)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Title I & Compensatory Education Programs (EDAJAGAJ)

Keywords

• Secondary education
• Grammar school education
• Sixth form education
• Extracurricular programs
• School facility hire

Headquarters

HQ city

Sidcup

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Others

Revenue model

1. State-Funded Education: As a UK state-funded grammar school, CSGS receives government funding through the Local Authority (Bexley) for student education. No tuition fees are charged to students. Additional revenue is generated through facility hire to the community.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Chislehurst and Sidcup Grammar School is a state-funded selective grammar school delivering secondary and sixth form education (Years 7-13) covering Key Stages 3, 4, and 5, leading to GCSE and A Level qualifications. The core academic programme is supplemented by an extensive extracurricular offer including sports (rugby, cricket, tennis, netball), performing arts (music, drama, dance), the Duke of Edinburgh Award Scheme, and personal development initiatives. Out-of-hours facility hire to community users is managed through a partnership with Vivify Venues.

Product overview

Chislehurst and Sidcup Grammar School offers a comprehensive educational service comprising secondary and sixth form academic programmes across Key Stages 3, 4, and 5, complemented by extensive extracurricular activities. The school operates as a unified offering with educational programmes at its core, supported by sports facilities (available for community hire through Vivify), a competitive sports programme (including flagship rugby, cricket, and tennis), and creative/performing arts programmes (music, drama, dance, and art). Additional enrichment includes clubs, societies, the Duke of Edinburgh Award Scheme, Quest Lectures, and Student Leadership opportunities. The school partners with Vivify for facilities hire to generate community revenue.

Differentiator

Problem solved

Functional benefit

Products and services

• Educational Programmes (Years 7-13) Comprehensive secondary and sixth form educational programme covering Key Stages 3, 4, and 5 (Years 7-13), including curriculum areas focused on academic excellence, careers education, and personal development. Delivered to students aged 11-18 at CSGS's Sidcup campus.
• Sports Facilities Hire (via Vivify Venues) Hire of indoor and outdoor school facilities to community groups, managed through the Vivify Venues partnership. Includes classrooms, conference space, dance studio, drama studios, dining halls, main hall, cricket nets, grass fields, lecture theatre, and a MUGA, with on-site car parking.
• Sports Programme Comprehensive competitive and participation sports programme including rugby (described as the 'flagship sport' with matches against top schools in the South-East), cricket (Top 25 State Schools for Cricket per The Cricketer 2025 and 2026), tennis (LTA County School of the Year), netball, athletics, badminton, dance, and cross country.
• Creative and Performing Arts Programme Performing arts and creative programme including music concerts, drama productions (two major productions annually, one of which is a full school musical), dance showcases, and art exhibitions. Notable alumni include Matthew Rowland (RSC Matilda the Musical International Tour).
• Clubs and Societies Programme Extra-curricular clubs and societies including the Debate Society (winners at the Frankly Speaking Competition at the U.S. Embassy), the Duke of Edinburgh Award Scheme, the Quest Lecture Series, and Student Leadership programmes. Partnerships include the Marlborough School Partnership for Learning Mentors.
• Young Enterprise Programme Student entrepreneurship programme where teams create and run their own companies. The 2025 company 'Flourish' won Best Company at the Young Enterprise East London Finals and Outer East London Finals.

Quantifiable outcome

• 81% of students went on to university in 2025
• +4 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Vivify VenuescoreChannel Partner/ Reseller/ DistributorVivify is a school lettings company that manages community hire of the school's facilities out of hours. They facilitate bookings for classrooms, conference space, dance studio, drama studios, dining halls, main hall, cricket nets, grass fields, lecture theatre, and MUGA. The partnership generates revenue for the school and makes facilities accessible to the local community.
• Bexley District (Sports Coaching)coreStrategic or Co-development PartnerThe school is supported by coaches from Bexley District throughout the winter and summer sports seasons. This partnership ensures pupils receive high quality coaching year-round across various sports including rugby and cricket.
• Sidcup RFC (Rugby)minorStrategic or Co-development PartnerPartner rugby club where Year 7 newcomers share three early-season Saturday mornings to be introduced to the game safely and effectively. Supports the school's rugby programme.
• Dartfordians RFC (Girls Rugby)minorStrategic or Co-development PartnerGirls' rugby coaches from Dartfordians RFC supported sessions at the school. The school hopes enthusiasm for girls' rugby will build through this partnership.
• Marlborough School Partnership (Learning Mentors)minorStrategic or Co-development PartnerPartnership programme where learning mentors support students through the Marlborough School Partnership initiative, supporting personal development beyond the classroom.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Regional players

• Bexley Grammar School: Bexley Grammar School is the largest secondary school in the Bexley borough and a direct local competitor for selective Year 7 admissions. Comparable as a co-educational grammar school sharing the same Bexley Local Authority catchment.
• Wilmington Grammar School: Wilmington Grammar School is a boys' grammar in Dartford, Kent, part of the Wilmington Grammar School Trust with a sister girls' school. Comparable as a neighbouring selective grammar in the Kent/Bexley border area.
• Dartford Grammar School: Dartford Grammar School is a boys' selective grammar in Dartford, Kent, serving a similar commuter-belt market. Comparable as a neighbouring grammar school on the Kent/Bexley border with traditional grammar school ethos.
• Townley Grammar School: Townley Grammar School is a girls' selective grammar in Bexleyheath, part of the same Bexley grammar family as CSGS. Comparable as a co-grammar peer sharing the same 11+ admissions process and local authority funding.

Direct peers

• St Olave's Grammar School: St Olave's Grammar School in Orpington is a selective boys' grammar with strong state-school academic results. Directly comparable as a South East London/Kent grammar school serving a similar commuter-belt catchment to CSGS.
• Pate's Grammar School: Pate's Grammar School in Cheltenham is one of the top-performing grammar schools nationally. Comparable as a high-achieving selective state grammar school with similar league-table positioning and demand pattern.
• Tiffin School: Tiffin School is a boys' grammar school in Kingston upon Thames and a perennial top performer in national league tables. Directly comparable as a selective state grammar school in the Greater London area with similar academic and extracurricular profile.
• Henrietta Barnett School: Henrietta Barnett School is a girls' grammar school in Hampstead Garden Suburb, frequently ranked top state school nationally. Directly comparable as a high-achieving selective state grammar in London with comparable academic results and parent demand.
• Queen Elizabeth's Boys' School: Queen Elizabeth's Boys' School is a selective grammar school in Barnet consistently ranked in the top UK state schools. Comparable as a selective boys' grammar school with strong academic outcomes and similar extracurricular offerings.
• Wilson's School: Wilson's School is a boys' grammar school in Sutton, consistently ranked among the top grammar schools in England. Directly comparable as a high-achieving selective state grammar serving a London commuter-belt community with strong academic and co-curricular programmes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks1 record

Key highlights7 records

Customer concentration

• Xx.com/chisandsidmusic
• LinkedInlinkedin.com/school/chislehurstandsidcupgrammar

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Chislehurst and Sidcup Grammar School