Many colleges have dual enrollment procedures where minors can enroll at the college and another school (usually high school) concurrently. To learn more you would need to contact the admissions office for the college you want to attend. You may need transcripts when you enroll in the college class. Please check with the school counselor to verify dual enrollment guidelines at your college.
To search for colleges within the California Community College system, please visit the Chancellor's Office website:
CCCApply may also have information: https://home.cccapply.org/colleges/requirements.