I agree re majors to help frame your search. I kind of started tossing out good academic D3 conferences overall with at least some members in the NE. But depending what you want to chase some of them might not be very useful. If you want engineering, MIT, Chicago, RIT, etc. If you want arts or music, different set, only some of whom have NCAA sports. If you want liberal arts/business/pre-professional, most of the conferences suggested have abundant liberal arts type programs. If you want arts or music at a serious level, again, specific schools, and there the sports programs depend on the school, eg, RISD doesn't have NCAA, but Pratt does.
If you have multiple interests or aren't sure, you don't have to pick per se but you might look at schools that flexibly cover them all. I ended up with a different major than I started and in a field I chuckled at doing when asked about it as a frosh. (Side point but if you're taking difficult STEM classes in HS (say, Physics II or Calculus) and making a B or B+, your GPA will do well by it, but the A students are the future math and science majors/premeds IMO)