These are two year courses. Study begins at the start of Year 12 and continues into your second year in the Sixth Form. Each A Level course is assessed by examination. All exams are at the end of Year 13. The final A Level grade can be used to enter Higher Education.
What you study at sixth form can affect your options at university and your future career.
Use Informed Choices to help you understand which subjects open up different degrees, particularly at Russell Group universities. https://www.informedchoices.ac.uk/