{"url":"/school/137219/dr-challoner-s-high-school","urn":137219,"name":"Dr Challoner's High School","phase":"secondary","type":"Academy converter","local_authority":"Buckinghamshire","address":{"line1":"Cokes Lane","town":"Amersham","postcode":"HP7 9QB","latitude":51.667303,"longitude":-0.56985},"ofsted":{"current_category_of_concern":null,"inspections":[{"framework":"oeif","framework_label":"Ofsted graded inspection (previous framework)","inspection_date":"2023-11-21","overall_effectiveness":"Outstanding","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":"Little change","earlier_span":"2021–2022","later_span":"2024–2025","earlier_ratio":1.56,"later_ratio":1.6,"years_used":5},"by_year":[{"intake_year":2025,"first_preferences":285,"all_preferences":658,"offers_made":188,"first_preferences_per_place":1.52,"national_percentile":93.0},{"intake_year":2024,"first_preferences":309,"all_preferences":644,"offers_made":184,"first_preferences_per_place":1.68,"national_percentile":95.0},{"intake_year":2023,"first_preferences":336,"all_preferences":688,"offers_made":186,"first_preferences_per_place":1.81,"national_percentile":96.0},{"intake_year":2022,"first_preferences":271,"all_preferences":692,"offers_made":179,"first_preferences_per_place":1.51,"national_percentile":93.0},{"intake_year":2021,"first_preferences":289,"all_preferences":756,"offers_made":180,"first_preferences_per_place":1.61,"national_percentile":93.0},{"intake_year":2020,"first_preferences":308,"all_preferences":688,"offers_made":180,"first_preferences_per_place":1.71,"national_percentile":95.0},{"intake_year":2019,"first_preferences":286,"all_preferences":695,"offers_made":180,"first_preferences_per_place":1.59,"national_percentile":93.0},{"intake_year":2018,"first_preferences":306,"all_preferences":722,"offers_made":180,"first_preferences_per_place":1.7,"national_percentile":95.0},{"intake_year":2017,"first_preferences":264,"all_preferences":619,"offers_made":179,"first_preferences_per_place":1.47,"national_percentile":93.0},{"intake_year":2016,"first_preferences":210,"all_preferences":528,"offers_made":180,"first_preferences_per_place":1.17,"national_percentile":80.0},{"intake_year":2015,"first_preferences":234,"all_preferences":498,"offers_made":180,"first_preferences_per_place":1.3,"national_percentile":88.0},{"intake_year":2014,"first_preferences":235,"all_preferences":461,"offers_made":150,"first_preferences_per_place":1.57,"national_percentile":95.0}]},"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":79.1,"progress8":null,"progress8_confidence_interval":null,"english_and_maths_grade_4_plus_percent":99.5,"ebacc_grade_4_plus_percent":95.1},{"academic_year":2023,"attainment8":78.2,"progress8":1.11,"progress8_confidence_interval":[0.87,1.35],"english_and_maths_grade_4_plus_percent":100.0,"ebacc_grade_4_plus_percent":94.4},{"academic_year":2022,"attainment8":78.5,"progress8":1.08,"progress8_confidence_interval":[0.85,1.31],"english_and_maths_grade_4_plus_percent":100.0,"ebacc_grade_4_plus_percent":93.4}],"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":72.8,"remained":67.5,"left_the_system":2.5,"left_to_other_school":2.8,"left_percent":7.3},{"academic_year":2023,"teacher_fte":66.0,"remained":62.5,"left_the_system":2.5,"left_to_other_school":1.0,"left_percent":5.3},{"academic_year":2022,"teacher_fte":65.7,"remained":57.9,"left_the_system":2.8,"left_to_other_school":5.0,"left_percent":11.9},{"academic_year":2021,"teacher_fte":67.1,"remained":59.5,"left_the_system":4.6,"left_to_other_school":3.0,"left_percent":11.3},{"academic_year":2020,"teacher_fte":67.4,"remained":65.9,"left_the_system":1.5,"left_to_other_school":0.0,"left_percent":2.2},{"academic_year":2019,"teacher_fte":69.8,"remained":61.0,"left_the_system":6.8,"left_to_other_school":2.0,"left_percent":12.6}]},"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"}]}