Dual enroll meaning take classes at a nearby college while going to high school? Do HSs let you take just part of their curriculum? Did you go to that college full time later on, or just for a couple years and then apply to regular 4-year colleges?
Yes went during high school hours, they let me out 2 hours early. I didn't get high school credit, but you could fail/skip 2 classes and still graduate. I went to college after this, graduated about 1 year early.
I had a somewhat similar issue in high school and 1 summer class got me more advanced than anyone else, I was able to duel enroll after that.