Worth repeating, from @InigoMontoya :
“People are losing the point of the initial post. It’s not whether dual enrollment or AP is worthwhile. In most cases dual enrollment/IB/AP is very worthwhile. It’s whether taking a course at a high school taught by a high school teacher that then gets an accompanying “letter grade” from a university is worthwhile at a cost of $325/course.”
You really have to vet what might be offered by different hs districts. There are a number of good programs where the college has a foot in local hs, the hs teachers are trained to the college’s expectations, a college approved syllabus. Or some where the hs is located on or near the college campus and some teachers have roles at both.
But just to take what seems to be a more hs level class for the “college credit” misses the point in the rigor and, in some cases, the variety of what can be done via true DE.