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How can this be enough to fund a scholarship in perpetuity?
Some historical and mathematical insights as a complement to existing answers.  History. I found it astonishing that already in Ancient Roman they investigated the issue of perpetuity of 30'000 (almost). Columella writes in De re rustica (3, 3, 7–11.) in 1-st century AD about a perpetuity of 32480 sesterces principal under 6% p.a. resulting in 1950 sesterces annual payment. And  if  the  husbandman  would  enter  this  amount  as  a  debt  against his vineyards just as a moneylender does with a debtor,   so that the owner may realize the aforementioned six per cent. interest on that total as a perpetual annuity,  he  should  take  in  1950 sesterces every  year.   By  this  reckoning  the return on seven iugerum, even according to the opinion of Graecinus, exceeds the interest on 32'480 sesterces. Math. If we fix a scholarship at 1'000 a year, then it's clear that it could be paid out infinitely if we could achieve 3.33% p.a. on it.  On the other side, with 0% we'll spend out the endowment in 30 years. Thus, having the interest rate between 0% and 3.33% p.a. we could vary the life of endowment between 30 years and infinity. Just a few numbers in between: under 1%, it would be ~36 years, under 2% ~46 years, under 3% ~78 years (however, 1000$ in 78 years could be less than 10$ today). Conclusion: to keep it perpetual either the fund's yield must be at the level of scholarship, or re-adjust the amount of scholarship depending on fund achievement, or redefine the notion of perpetuity (like 50 years is approximately infinite for our purpose).