Typical second year college math courses (after completion of single variable calculus or AP calculus BC) would be:
- Multivariable calculus
- Linear algebra
- Differential equations
- Discrete math
Note that 2 and 3 are sometimes combined into one course. For a prospective physics major, the first three tend to be useful. Discrete math is mostly of interest to computer science and math majors.
So if taking math at a local college while in high school is feasable, using that opportunity to take the above courses could be useful.