Hi Isabelle, it depends on what specialty you are interested in practicing. General Surgery education, for example, can take approximately 13 years to complete. These 13 years include 4 years of college, 4 years of medical school, and 5 years of General Surgery residency. If you wish to do a specialty, you will be doing a fellowship training and this adds about 2-3 years to these 13 years of training (pediatrics, transplant, cardiothoracic surgery etc.). Bottom line, you are looking at about 13-15 years of schooling before you become and can work as an attending surgeon. Also, you will be taking medical board exams at the end of your residency. It definitely helps and is to your advantage that you are interested in the biological sciences. Make sure you keep making excellent grades (especially in math and science) and strive in athletics. Universities tend to give their student athletes scholarships to fund their education, so definitely keep up in the athletic field. Strong leadership is essential to becoming a surgeon, and if you can demonstrate this through volunteer work, extracurricular activities, or any student organizations you participate in, it will significantly help your application into college and medical school.
Hope this information helps you. All the best!