I'm a high school senior in New York City who got into the University of Chicago through Questbridge- a scholarship program. It pays for everything- dorms, tuition, insurance, travel, etc. I want to major in physics with a concentration in astrophysics. I'm pretty certain its what I want to do with my life. Currently I am really poor- my parents make under 20k a year. To me, the life of a physicist is a huge improvement financially anyway, so I am really into it for the fun of it. I'm worried about paying for grad school- I know its really early, but I'm wondering if I should be looking for scholarships now. Also, I'm wondering what kind of grad schools I'd have to get into and what GPA I'll need to pull in order to get a good shot at becoming a professor at one of the top 20 schools in physics. Thanks!!!