Was at one point in a similar situation. Went to a math and science high school with the hopes of eventually going to Stanford or MIT. Instead, I ended at my state school. As a senior looking back on college, I'm extremely satisfied with my choice. I've had the opportunity to learn from some great professors and have gotten a few internships at Google and a fulltime job at Palantir from it.

Regardless of where you go you can always find great people and learn from them.