[ckuhl]

That’s assuming the rest of the endowment isn’t reinvested. You’d need less than a 2% annual return on that $22B to fund the tuition in perpetuity.

[ChrisLomont]

Princeton tuition was 26K in 2001. It is now 45K. That's 3% growth in tuition, cutting into your estimate.

The current endowment growth is already being spent to fund the university to the tune of ~4-6% [1].

So, if you take that source away, tuition would likely have to pick up the slack.

Care to rerun your numbers adding this all in?

[1] https://www.princeton.edu/news/2013/10/18/princeton-endowmen...