The Department of Education's Fulbright-Hays program has a series of summer programs available to primary, secondary and post-secondary teachers, administrators and librarians to such places as Australia, Argentina and Uruguay, India, China, Morocco, Mali, Hungary and Jordan, among others. Four to six weeks, and the vast majority of the tab paid for by Fulbright. If you're a teacher at any level, check it out:
http://www.ed.gov/programs/iegpssap/sapfacts.html
