This report looks at the uptake of General Certificate of Secondary Education (GCSE) (and International General Certificate of Secondary Education (IGCSE)) subjects in England in 2013. Reports on GCSE uptake have been produced by Cambridge Assessment every year since 2010. This is the first year that IGCSEs have been included in the data for the report. A decision was made to include IGCSEs due to the increasing numbers of candidates taking these qualifications as alternatives to GCSEs. The data for these analyses were taken from the National Pupil Database (NPD). For the analysis of uptake at GCSE the Key Stage 4 (KS4) extract of the NPD was used, consisting of all students who were at the end of KS4 in 2013 (i.e. in year 11). Uptake in this report is defined as the percentage of these students taking a GCSE in the subject, and includes exams taken by these students in previous years. Uptake of GCSEs in this report is presented by different student classifications: gender, school type, prior attainment, school gender and deprivation level. In the tables in this report, the numbers of students in each of the classifications are presented.