People to People International's School and Classroom Program is a free service that connects teachers and their students with classes in other countries for pen pal exchanges and projects that improve cultural understanding and encourage friendship.
Classes are matched according to similar age and number of pupils to form partnerships. Students interact by exchanging traditional paper letters or email messages supervised by their teacher, who receives a program manual for guidance.
Teachers may form partnerships with classes in multiple countries and work together for one or more school years.