{"url":"/school/137423/chislehurst-and-sidcup-grammar-school","urn":137423,"name":"Chislehurst and Sidcup Grammar School","phase":"secondary","type":"Academy converter","local_authority":"Bexley","address":{"line1":"Hurst Road","town":"Sidcup","postcode":"DA15 9AG","latitude":51.435793,"longitude":0.107782},"ofsted":{"current_category_of_concern":null,"inspections":[{"framework":"ungraded","framework_label":"Ofsted ungraded inspection","inspection_date":"2022-12-14","overall_effectiveness":null,"category_of_concern":null,"note":"The current framework awards no overall grade; a previous-framework grade is not a school's current one."}]},"demand":{"entry_point":"year_7","measure":"first preferences expressed divided by offers made","not_a_prediction":"It describes demand. It does not indicate whether any particular child would be offered a place.","movement":{"headline":"Fewer families are naming it first","earlier_span":"2021–2022","later_span":"2024–2025","earlier_ratio":1.65,"later_ratio":1.28,"years_used":5},"by_year":[{"intake_year":2025,"first_preferences":272,"all_preferences":1327,"offers_made":192,"first_preferences_per_place":1.42,"national_percentile":91.0},{"intake_year":2024,"first_preferences":241,"all_preferences":1377,"offers_made":211,"first_preferences_per_place":1.14,"national_percentile":75.0},{"intake_year":2023,"first_preferences":274,"all_preferences":1306,"offers_made":212,"first_preferences_per_place":1.29,"national_percentile":86.0},{"intake_year":2022,"first_preferences":247,"all_preferences":1368,"offers_made":192,"first_preferences_per_place":1.29,"national_percentile":85.0},{"intake_year":2021,"first_preferences":426,"all_preferences":2084,"offers_made":212,"first_preferences_per_place":2.01,"national_percentile":97.0},{"intake_year":2020,"first_preferences":207,"all_preferences":1337,"offers_made":212,"first_preferences_per_place":0.98,"national_percentile":54.0},{"intake_year":2019,"first_preferences":180,"all_preferences":1195,"offers_made":207,"first_preferences_per_place":0.87,"national_percentile":35.0},{"intake_year":2018,"first_preferences":241,"all_preferences":1290,"offers_made":197,"first_preferences_per_place":1.22,"national_percentile":82.0},{"intake_year":2017,"first_preferences":195,"all_preferences":1217,"offers_made":190,"first_preferences_per_place":1.03,"national_percentile":66.0},{"intake_year":2016,"first_preferences":230,"all_preferences":1296,"offers_made":192,"first_preferences_per_place":1.2,"national_percentile":83.0},{"intake_year":2015,"first_preferences":252,"all_preferences":1227,"offers_made":192,"first_preferences_per_place":1.31,"national_percentile":89.0},{"intake_year":2014,"first_preferences":253,"all_preferences":1197,"offers_made":192,"first_preferences_per_place":1.32,"national_percentile":90.0}]},"results":{"note":"Withheld figures appear as null, never zero. Progress measures are estimates published with a 95% interval.","key_stage_4":[{"academic_year":2024,"attainment8":75.6,"progress8":null,"progress8_confidence_interval":null,"english_and_maths_grade_4_plus_percent":99.5,"ebacc_grade_4_plus_percent":93.7},{"academic_year":2023,"attainment8":76.0,"progress8":0.82,"progress8_confidence_interval":[0.61,1.03],"english_and_maths_grade_4_plus_percent":100.0,"ebacc_grade_4_plus_percent":89.5},{"academic_year":2022,"attainment8":73.0,"progress8":0.46,"progress8_confidence_interval":[0.25,0.67],"english_and_maths_grade_4_plus_percent":99.5,"ebacc_grade_4_plus_percent":88.0}],"key_stage_2":[]},"workforce":{"note":"Full-time equivalents, not headcounts. Teacher turnover only: carries no claim about heads or senior leaders.","by_year":[{"academic_year":2024,"teacher_fte":79.9,"remained":73.2,"left_the_system":4.7,"left_to_other_school":2.0,"left_percent":8.4},{"academic_year":2023,"teacher_fte":82.1,"remained":72.3,"left_the_system":6.8,"left_to_other_school":3.0,"left_percent":11.9},{"academic_year":2022,"teacher_fte":82.6,"remained":73.4,"left_the_system":2.6,"left_to_other_school":6.6,"left_percent":11.1},{"academic_year":2021,"teacher_fte":80.8,"remained":68.4,"left_the_system":9.0,"left_to_other_school":3.4,"left_percent":15.3},{"academic_year":2020,"teacher_fte":79.0,"remained":67.8,"left_the_system":8.2,"left_to_other_school":3.0,"left_percent":14.2},{"academic_year":2019,"teacher_fte":77.4,"remained":62.4,"left_the_system":10.0,"left_to_other_school":5.0,"left_percent":19.4}]},"catchment":{"status":"none_published","note":"no_zone_published means we hold no zone for this school. It does not mean an address is outside one.","zones":[]},"how_places_were_allocated":[],"how_the_places_were_shared_out":[],"sources":[{"label":"Department for Education: Get Information about Schools","detail":"School identity, type, phase and address","url":"https://get-information-schools.service.gov.uk/","retrieved":"2026-09-02"},{"label":"Ofsted: state-funded school inspections management information","detail":"Inspection outcomes, published monthly","url":"https://www.gov.uk/government/statistical-data-sets/monthly-management-information-ofsteds-school-inspections-outcomes","retrieved":"2026-09-04"},{"label":"Department for Education: school-level applications and offers","detail":"Preferences and offers, 2014 to 2025 intakes","url":"https://explore-education-statistics.service.gov.uk/find-statistics/primary-and-secondary-school-applications-and-offers","retrieved":"2026-09-04"},{"label":"Department for Education: key stage 4 performance","detail":"Attainment 8, Progress 8 and EBacc, by school","url":"https://explore-education-statistics.service.gov.uk/find-statistics/key-stage-4-performance","retrieved":"2026-09-04"},{"label":"Department for Education: school workforce in England","detail":"Teacher turnover, by school, from the School Workforce Census","url":"https://explore-education-statistics.service.gov.uk/find-statistics/school-workforce-in-england","retrieved":"2026-09-04"}]}