A Levels are advanced qualifications typically taken by students in the United Kingdom at the age of 16 to 18. They are usually studied over two years and are often required for university admission. Students choose a few subjects to focus on, allowing them to specialize in areas of interest. The A Level curriculum includes a wide range of subjects, from sciences like Biology and Chemistry to humanities such as History and English Literature. Assessment is primarily through exams, and students may also complete coursework in some subjects. A Levels are recognized internationally and are considered a standard for higher education.