We’re you in a position to graduate from high school half way through your junior year? Do you have any understanding about f the academic requirements for admission to IU, especially those related to core curriculum? Do some homework (pun intended).
Reclassification is getting a lot more popular. It's not as hard as you think IF you have already been a good student, taken a full schedule of important classes (no study halls, worthless electives). Being in an "honors" class or two as well can easily put you ready for meeting graduation requirements early. No idea if the kid is an excellent student or not but reclassification is becoming more on the forefront as the years go by. (for academic reasons too, more uber serious/smart kids are looking to get to college a year sooner).