What are the best online college courses for high school students?

I'm a high school junior looking to take some college courses online. What are the best online college courses that are available for high school students? I'm hoping to get ahead and maybe earn some college credits while still in high school.

There's a variety of online college courses that are available to high school students through renowned educational platforms and directly from colleges. Here are a few recommendations:

1. MOOC Platforms: Websites like Coursera, edX, and FutureLearn have a vast array of courses from prestigious universities around the world. While you might not earn college credit for all of the courses available, these can provide a solid foundation for college-level work.

2. Advanced Placement (AP) Courses: CollegeBoard offers online AP classes in a variety of subjects. If you do well on the AP exam at the end of the course, you might earn college credit.

3. Dual Enrollment Programs: Many local colleges and universities offer dual-enrollment programs where high school students can take college-level courses for credit. Some programs also offer these courses online. Reach out to colleges near you to see what's available.

4. Harvard Extension School: Harvard Extension School offers a range of online courses across multiple disciplines. While these are typically designed for adults, high school students can also participate.

5. Stanford Online High School: Stanford OHS is a school that provides online high school and AP courses, but also advanced undergraduate-level courses to high school students.

Ensure to consider the course load before signing up. These courses can be challenging and require significant time commitment, so it's crucial to maintain a balance with your regular high school courses, extracurriculars, and other responsibilities.