Of Warren's cited examples, schools are the only plausible answer. To say that school is valuable isn't an insight, and to say that school can only be government-funded and -run is baseless.
An argument can be made that government does it the best, but it's disingenuous to say that because Republicans (along with everyone else, and forcibly) had public schooling, they give up their right to upgrade what they got, for the next generation.