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I'couldn't find the answer in your document, but here is what I found on the web:
A-levels are school leaving qualifications offered by the educational bodies in the United Kingdom and the educational authorities of British Crown dependencies to students completing secondary or pre-university education. They are typically taken by students aged 16 to 19 and are equivalent to the second year of a full-time undergraduate degree course. A-levels are a type of advanced qualification that allows students to specialize in certain subjects before entering university. They are assessed through a combination of coursework and exams.