ESI seeks to recruit only people of the highest quality. Two of the most valuable characteristics that we require of our candidates include a teamwork mentality (the ability to work well with other people, including people of other cultures) and a flexible personality (the ability to adapt to new and challenging situations). In addition to these characteristics, ESI teachers have a solid reputation for their professionalism and commitment to their students.

ESI has a strong commitment towards international development based on Christian humanitarian principles, and therefore only accepts teachers who have the highest level of moral and ethical behavior believing that these values make the world a better place.