I think the point is- courses that cover material that used to be considered below college level will now be given college credit. Or courses that cover college

I think the point is- courses that cover material that used to be considered below college level will now be given college credit. Or courses that cover college material will now be stretched into two semesters, doubling their credit. The logical result of this is that the material level that is covered in college will go down, as people will be using up credits on lower level courses. HS graduation exams are useful feature of most successful school systems. That so many people were passing those but still requiring remedial instruction indicates that there was something lacking. However, if graduation rate is the metric you are optimizing for, there is no need to pull those in.