Unfortunately, California may be the most expensive state for non-resident college costs. In addition to the Cal State schools already mentioned, there’s University of Redlands, which caps tuition at $25k for non-residents with a 3.0+GPA in core classes in grades 10-12. But that still leaves you with a total bill over $40k/yr when you factor in room, board, books, etc.
Since you’re in Texas, what about a school like Stephen F. Austin? With the Purple Promise Guarantee, you’d get free tuition as long as your family income remains below $80k. That would still leave costs for room and board if you aren’t close enough to commute from home, but at least you’d be borrowing far less money than with most other 4-year options.