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Introduction
Chislehurst & Sidcup Grammar School (CSGS), previously known as Sidcup County School for Boys, was established in 1931. It’s a co-educational grammar school catering to students aged 11 to 18 in Bexley, London. It’s renowned for its exceptional academic performance. The school divides its students into five houses: Williams, Lester, Edlemann Townshend, and Davies. It also has a staff house for school employees.
Students generally adhere to the national curriculum. Study plans are designed to provide a comprehensive and challenging program that enhances their knowledge and comprehension. All students study mathematics, English, science, geography, etc.
CSGS highly recommends pupils engage in at least one activity outside the standard curriculum. There are more than a hundred options, ranging from fields such as athletics, performing arts, and musical pursuits, to strategic games like chess, contributing to the school’s newspaper, and youth entrepreneurship initiatives.
Chislehurst & Sidcup focuses on upholding strong teaching practices, helping students achieve their best in academic and non-academic activities, and nurturing curious, knowledgeable, creative, and well-spoken learners. It supports student leadership and positive involvement in the school and the wider community. The school also seeks to promote healthy, active, and safe lifestyles to help students become happy and self-reliant individuals.
The emphasis on academic and individual growth has resulted in notable educational accomplishments. Pupils at CSGS regularly excel in their GCSE and A-Level exams, showcasing the efficacy of the school’s educational methodology.
If you are interested in seeing what a typical day at the Chislehurst & Sidcup looks like, check out this video:
Chislehurst & Sidcup Grammar School 11 Plus (11+) Exam Information 2026
Address: Hurst Road, Sidcup, DA15 9AG
County: Bexley
Admissions info: enquiries@csgrammar.com, 020 8302 6511
School type: Co-educational grammar
Number of pupils: 1,330 (approx.)
Number of places in Year 7: Approximately 190
Open Day date: October
Exam date: September 2026
Pass mark: Aim for 80%+ in our practice tests. See below for more details.
Exam type / Board: Quest Assessment
Chislehurst & Sidcup Grammar School 11 Plus (11+) Admissions
Chislehurst & Sidcup Grammar School is part of the Bexley Co-ordinated Secondary School Admissions Scheme and only students who pass the Bexley test can be considered for admission in Year 7.
The Bexley test aims to select the top academic students for entrance to the school with pass marks set by a selection panel of headteachers and officers. In order to be eligible for consideration, students need to produce test scores within the top 180 candidates. However, it should be noted that passing the Bexley 11 Plus isn’t a guarantee of a Year 7 place.
In cases where there are more eligible candidates than Year 7 places, the school uses its over-subscription criteria, prioritising students who:
- Are Looked After or have been Looked After Children
- Are amongst the highest performing students in the 11+ exam (top 180 scores)
- Have a sibling attending the school at the time of the application
- Are the sons/daughters of members of Chislehurst & Sidcup’s staff
- Live nearest to the school.
More information about the school’s over-subscription and admissions policies can be found here. You can view the school’s exact location on the map below:
How to Apply for 11 Plus (11+) Entry to Chislehurst & Sidcup Grammar School
If you intend to have your child take the Bexley 11+ Selection Test, you must register online directly with the Bexley Local Authority (LA) by their designated deadline, as stated on their website.
Once the online registration for the selective test is completed, the Bexley LA will provide you with detailed information, including the exact date and venue of the test, along with instructions on what steps to take if your child falls ill on the test day.
Is Chislehurst & Sidcup Grammar School part of a Consortium?
Chislehurst & Sidcup Grammar School belongs to the Bexley 11+ Consortium, a group of schools that use the same entrance exam format and share a very similar admissions process.
Does Chislehurst & Sidcup Grammar School have a catchment area?
Chislehurst & Sidcup Grammar School doesn’t have a catchment area. However, as part of its oversubscription criteria, it will prioritise pupils who live closer to the school.
Chislehurst & Sidcup Grammar School 11 Plus (11+) Exam Format
The Chislehurst & Sidcup Grammar School 11+ exam consists of two multiple-choice papers, each lasting approximately 50 minutes.
⇒ Test 1: Verbal Skills – Comprehension, Technical English & SPAG, Verbal Reasoning
Consists of two sections ➤ The paper begins with a reading passage, followed by a series of comprehension questions. Then there are questions that test two of the following three topics: Spelling, Punctuation and Sentence Completion. A subsequent Verbal Reasoning section evaluates your child’s ability to discern rules and relationships between words and letters.
⇒ Test 2: Mathematics & Non-Verbal Reasoning (with elements of Spatial Reasoning)
Consists of two sections ➤ Section 1 covers Mathematics questions that assess students’ mathematical skills, problem-solving abilities and logical reasoning. Section 2 is broken down into multiple timed subsections that assess Non-Verbal Reasoning (NVR) and Spatial Reasoning. NVR questions test students’ ability to solve problems using visual and abstract reasoning. Spatial Reasoning tests spatial awareness, mental rotation, visualisation and problem-solving skills.
The exam is produced by GL Assessment. All questions are multiple-choice and answers should be marked in the specially provided answer booklet. Most questions will require one correct answer to be selected. Some Verbal Reasoning questions may require two answer choices to be selected. Rough paper will not be provided but your child can write on the question booklet to help them work out the answers. These workings are neither submitted nor marked.
Students will be given a separate age-standardised score for each of the three subject areas:
- Verbal Ability – Comprehension, Technical English and VR
- Numerical Ability – Mathematics
- Non-Verbal Ability – NVR and Spatial Reasoning
One total age-standardised score will then be used to decide whether your child is eligible for entry. The total score is weighted, by combining 50% of the Verbal Ability score, 25% of the Numerical Ability score and 25% of the Non-Verbal Ability score.
How to Prepare for the Chislehurst & Sidcup Grammar School 11 Plus (11+) Exam?
To enhance your child’s confidence in the lead-up to the exam day, we strongly encourage the use of our practice tests. They are designed to familiarise students with the Chislehurst & Sidcup entrance exam style and format, while encompassing all the potential question types that could come up.
Our practice tests serve as a useful tool to identify areas in your child’s knowledge base that might need further work and assistance. Through a structured approach to 11+ exam preparation that includes studying ‘little and often’, you can alleviate unnecessary stress and increase the chances of success.
Furthermore, working through practice tests under timed conditions allows children to improve their ability to answer questions under time pressure. In doing so, they gain a noteworthy advantage over their peers, which is crucial in such a competitive admissions process.
Chislehurst & Sidcup Grammar School 11 Plus (11+) Exam Pass Marks and Target Scores
The minimum standardised score to be achieved in both papers is 216, while top applicants typically score over 246.
Pupils who are able to score 80%+ consistently in our 11+ practice tests are on track to pass the Chislehurst & Sidcup 11 Plus.
Whilst there are no guarantees, this has historically been a fairly strong indicator that your child should do well in the Chislehurst & Sidcup 11+ exam. Please click here to learn more.
Chislehurst & Sidcup Grammar School 11 Plus (11+) Practice Exam Papers
Since CSGS is part of the London Borough of Bexley, they use the shared Bexley Selection Test for their 11+ Exam. This exam is created for Bexley by the exam board Quest Assessment. The resources below are specifically designed to match the Quest Assessment format used by Bexley Grammar Schools. They will therefore prove ideal for children currently preparing for the Chislehurst & Sidcup Grammar School eleven plus exam:
Bexley: Full Practice Tests
The following practice tests are specifically designed to help your child prepare for the Bexley 11+ Exam. They provide excellent mock exam preparation, highlighting your child’s strengths and weaknesses:
Practice Papers
Bexley: Subject Specific Practice
The following 11+ resources provide full preparation for the English section of the Bexley Selection Test, maximising your child’s Comprehension and Technical English skills:
Practice Papers
Video Masterclasses
10 Minutes Test
Video Masterclasses
To help you child master Verbal Reasoning skills in the lead-up to the Bexley Selection Test, we recommend the following resources:
Practice Papers
10 Minutes Test
Video Masterclasses
The following 11+ resources extensively cover the Mathematics section of the Bexley Selection Test, allowing your child to thoroughly prepare for exam day:
Practice Papers
Video Masterclasses
10 Minutes Test
Video Masterclasses
The following resources will help boost your child’s Non-Verbal (NVR) and Spatial Reasoning (SR) abilities ahead of the Bexley Selection Test:
Practice Papers
Video Masterclasses
Video Masterclasses
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Our practice tests aim to show what sort of questions have been included in Chislehurst & Sidcup Grammar School 11+ past papers. The information provided about Chislehurst & Sidcup Grammar School is believed to be correct at the time of publishing. However, please be aware of future changes. We advise you to contact the school directly if you are unsure of anything. School contact details are provided within the article.
Please note that Exam Papers Plus is an independent publisher of practice tests and resources, and is not affiliated with or endorsed by Chislehurst & Sidcup Grammar School.
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Author(s)
Louise Lang
Director of Learning
