Just stumbled about this opportunity from Hilton Honors!
From their web site:
Hilton HHonors™, the guest loyalty program of Hilton Worldwide, has long believed in the power of travel to bring people together and foster greater understanding between countries. As nurturers of future generations of travelers, we believe teachers play an important role in spreading understanding of other cultures.
This year, Hilton HHonors is celebrating culture by giving teachers the chance to experience first-hand the lessons they teach through Teacher Treks, a grant program that will award 15 winners the cultural excursion of a lifetime.
For additional information and to apply,click here. Applications are due March 15.