UVA requires a transcript of grades with the application, which is generally final grades for all courses in grades 9-12. They require midyear senior grades as mentioned above and final transcripts. GPA ranges are not very meaningful since some schools weight, some don’t and the scales they use are all over the place. I second the recommendation to read through Dean J’s blog. Take challenging courses and get good grades. Don’t sacrifice core courses to load up on math and science …all in the blog.
As far as what else to work on… the grades let them know if you can handle the academics. The ECs let them know what you bring to the community. What I see in the students I know that are there - strong leadership, commitment to serving others, entrepreneurial nature.