Princeton has a similar program, and Columbia and Yale in the process of eliminating loans for kids who come from families making less than $50K. But, the schools who do this are far outnumbered by those who don't. Some of their peer institutions have eliminated the work requirement for first-year students. Most colleges don't have the endowment that Harvard has to pull this off.
Only about 9% of kids who apply to Harvard are actually accepted--so, even for minority students, it's not easy.
These tend to apply to undergrads ONLY.