I live in the US as an exchange student from Germany in 11th grade. When I go back to Germany I will have 11th (I have to repeat it) and 12th grade. Then I want to apply to five universities in England including my favorite the University of Cambridge. My question is if extracurriculars are important or increase admission chances. Would it be of advantage to develop an extensive collection of extracurricular activities? Or is only scholastic performance important?