It’s important for you to be assertive and emphasise (to your parents, school and others) that you dont want to contribute to the animal product industry. For that reason, do everything that you can to avoid leather in your shoes; and ask seriously whether they have a jumper made of nonanimal materials. If they dont, it would be great if you could bring up the matter for the next School Council meeting, or write a suggestion letter to your school principal or housemaster. I hope this helps. If your letter is approved of, you wont just be saving a few animals…you would probably be saving thousands.