It depends on the actual dual enrollment class. Precalc is different than multivariable. Physics 2000 level courses are different than Physics 1000 courses. It depends on the institution. Is it a CC or four year university. Then lastly look at a strong state flagship and look at their transfer equivalency tables. If it will not transfer it says something. So long as you take a rigorous course load either or a mix should be fine. However, Duke is not likely for any student so you need other schools.