What are some classes a freshman could take to earn credit for college?

Your question is a bit confusing. You are a freshman in high school? You want to take classes now that will earn you college credit when you start college in 3+ years? Ask your guidance counselor if your school offers A.P. (Advanced Placement). Most colleges will give credit if you score well on the exam. Some community colleges allow high school students to take classes for credit. These will transfer to public institutions in your state, but maybe not out-of-state or to a private college. Some states, like Idaho, for example, offer "dual enrollment" so high school students can take college classes and get high school and college credit. If you are just worried about getting into college, the classes you take in high school are just fine. Talk to your guidance counselor, but most high school have a set of requirements that are acceptable to most colleges. For example - four years of English, two years of a foreign language, two years of math, etc. Always take as much science and math as you can.

I don't know of any classes that does that. However, I do know, at least in my town, high school students can enroll in the local community college, pay a lower fee because they're still in high school, and get their two years of general studies out of the way WHILE they are still in high school. A co-worker of mine had a 16 y/o that did this and they paid substantially less than if he was a high school graduate. As far as what you are talking about, go talk to your guidance counselor for specific details. That's what they're there for. Good luck.