should your kids take out a loan to send other kids to school?

keep in mind there are two kinds of scholarships, merit is still an option regardless of income. then someone else would be subsidizing your kid!

Yes, and there’s even a name for it:
"High Tuition/ “High Aid” model

To reduce reliance on OOS students, College of William & Mary boosted tuituon prices for instate students. Now the instate fullpays not only pay more for themselves, they also pay for other students.
https://www.insidehighered.com/news/2013/04/22/william-mary-adopts-new-financing-model-embraces-high-tuitionhigh-aid

It works as long as a school can find enough suckers.

And the result is popular private colleges have student bodies increasingly made up of the rich and the poor/lower middle class, and relatively few students from the middle and upper/middle class. Perhaps this is one reason there has been so much dissension lately at popular private colleges like Yale.

And ED just makes it worse: only rich fullpays and poor fullrides can really take advantage of it.