The article claims 80% of American households meet this threshold. I wonder what % of their incoming class (say restricted to Americans) meets this threshold.
That's a great question, I'd bet it's fair to say that 80% of their applicants would not qualify, and yet it opens the door for some really deserving humans. (Not being able to afford it is why I didn't go to MIT, I also wasn't accepted at Cal, yet UCLA (and all of the UC system for that matter) was under 4,000 a year and that's what my folks and I could afford so that's where I studied.)
Use College Navigator for these types of questions:
https://nces.ed.gov/collegenavigator/?q=MIT&s=all&id=166683#...
That link says 72% of incoming freshman in 2022-2023 received financial aid. Also has a full-time beginning net cost average of just under $22,000 in 2022-2023.
It's not a perfect source of data, but there is enough on College Navigator to let you dig into it a bit and compare to other schools.
Princeton has had a similar rule since 2001. Their current number is $100k. 25% of students pay nothing to attend. [0]
[0] https://www.princeton.edu/news/2024/03/29/princeton-trustees... (go tigers)