Could I get into an Ivy League School?

Everyone applying to the top schools has the highest grades in the hardest classes and very high test scores. Right now, you're an average applicant at best. Harvard took fewer than 6% of applicants last year. You need a lot more than just fantastic grades and test scores to have a shot at those schools. You need some way to stand out, preferably in the field you'll major in, and you need a good reason to attend those schools ('It's a great school' and 'It sounds really impressive' are not good reasons).