Sixth-form refers to the final two years of secondary education in the United Kingdom, typically for students aged 16 to 18. During this period, students prepare for advanced qualifications, primarily the A-levels, which are crucial for university admission. Sixth-form can take place in dedicated sixth-form colleges or within secondary schools that offer sixth-form programs. Students in sixth-form usually choose a few subjects to study in depth, allowing them to specialize in areas of interest. This stage of education emphasizes independent learning and critical thinking, helping students develop skills necessary for higher education or the workforce.