This report is focused on the uptake of General Certificate of Secondary Education (GCSE) subjects in England in 2023. Uptake in a GCSE subject is defined as the number or percentage of students at the end of Key Stage 4 (KS4) taking the subject. This report was produced using publicly available data from the Department for Education's (DfE). The dataset consisted of KS4 results in all subjects provided by each school in England. Other school information, such as schools' sex composition, admissions policy, and the number of disadvantaged pupils at the end of KS4 were also available. Only GCSEs (9-1) full course (both single and double award) were counted for this report. GCSE qualifications are taught at several different types of school. In line with the uptake reports for 2019 and onwards (e.g., Gawedzka & Gill, 2022; Lim & Gill, 2023), schools were assigned a school type based on their admissions policy and institution type as recorded in the dataset. In this report, schools were classified into seven different school types: Academy (nonselective in highly selective area (HSA)), Academy (other non-selective), Academy (selective), Independent school, Non-selective in highly selective area, Other non-selective, and Selective. Other non-maintained schools, such as special schools, were excluded.