THINK Global School

Though it's headquartered in New York City, THINK Global School is a high school without walls. Students spend each semester in a different country, learning about local culture, studying natural sciences, and reading classic literature from the area. During the 2014-2015 school year, students spent the fall semester in Costa Rica and the spring in Greece. "As they sailed from island to island in the Ionian Sea, they delved deep into lessons on philosophy, art, and literature - just truly embracing the moment while in this gorgeous environment," Lee Carlton, an IT analyst at THINK, tells Business Insider. "It's a place-based learning activity that we're incredibly proud of and something our kids gained a lot from." In each country, students also pursue charity projects and community-based work. For parents who want their kids to become global citizens, there's no better school than THINK.