What kind of schools could I get into?

It’s been on my mind for a while so I thought I’d just come out with it and ask. I’m in 10th grade and I do fairly well in high school. I have about a 3.6 GPA weighted, 3.4 unweighted. I’m working on moving it up to a 3.7 or a 3.8. I haven’t taken SAT’s yet, but assuming I get a fairly average score, could I get into a good school? I want to study one of these: Physics, teaching physics at the high school level, astronomy, astrophysics. So accounting for these things, could I get into a good school? Like say Washington State University (just an example) or something like that?

Any general direction, help, or support here would be nice to ease my mind. My future is practically all I think about.

P.S. : My extra curricular activities include environmental action club, and S.T.A.R. which is where I go to a local elementary school and tutor the kids who need it.