Key Stage 4 (Y10 & Y11) is an educational stage in the British school system for students aged 14 to 16. It is the stage of education that covers the last two years of compulsory education in Years 10 and 11. Key Stage 4 is an important period for students as it involves the study of subjects leading to iGCSE qualifications.

During KS4, students choose a set of subjects to study in more depth, and their performance in these subjects contributes to their final qualifications. The subjects will vary from student to student, but they include core subjects like English, mathematics, and science, as well as the optional subjects Computer Science, German and Art & Design.