Chance Me! Italian student

Actually In Italy we cannot decide our courses. What I can say is that I’m in the hardest school (Liceo Scientifico), in the hardest class and I’m for sure in top 25% even if we don’t have class rank. The things I rely on are my cv and my sat score.
Now that I’m here I have another question, do you any suggestions to give me in order to write an awesome essay?