My understanding is that to qualify for the grant at least 12 of the credits you take each semester have to be required for your major. My son took courses his first 2 years that counted for more than one requirement (for ex., one course counted as English AND an intensive writing gen ed), so now we’re having trouble finding courses that are required for his degree that won’t overload his schedule. Kids who change majors or who aren’t sure what major they want (so they start with gen eds) may not have enough required courses left to qualify for the grant all 4 years.
If dual enrollment courses are accepted as electives or gen eds, it may fill up spaces that won’t be available later. Maybe @sybbie719 can give some insight on how it works.