Can you find a school that costs less that $12K per year? (In California, the CSU system is about half that for residents, I think, although UC is pretty close to that)
When you go, be prepared to learn about more than computers. Learn to write and speak. Learn History and Philosophy. Lean Psychology and Biology. Learn Art and Music. Learn how other people outside of the sciences think. Take in the abstractions that come with the Math classes that will go with your C.S. studies.
I also knew I was going to do C.S. before I started my freshman year at CSU, having spent some time looking into it before hand, but there is a lot to explore while you are there. (my family couldn't afford a computer in the late 70s / early 80s, so I didn't learn any programming until senior year of high school. I did manage to learn about binary, BCD, fixed precision arithmetic, simple encryption, hex math and a few other things in our grade school and middle school libraries, though, as well as wiring and soldering electronics at home) Use that as an advantage to make sure your class selections are progressing towards your major and degree.
To the author's point, though, when I went to CSU starting in 1983, it was about $500 / year in fees, going up to about $1000/yr when I finished in '88 (yeah, it's been a while). Now, for my university bound daughter, I'm looking at about $7000/yr in fees for CSU. Choose how and where you spend your money wisely