Does it matter where I go to college? Please help, I'm freaking out?

You will be competitive for Virginia Tech if you can maintain the 3.5 unweighted GPA and score 1800/2400 on the SAT. Being in the top quarter of your cl will make you competitive for admission. You will need four years of high school math and three years of high school science for admission as a math or physics major. Astrophysics is an unusual undergraduate major and would usually be studied in graduate school.