WorldTeach volunteers in Costa Rica teach English at public primary schools (first through sixth grades) under the auspices of the Ministry of Education. Most teaching placements are in small towns in rural areas throughout the country.

Throughout the year, many WorldTeach volunteers start or contribute to community projects in addition to their regular teaching responsibilities. Past community service projects have included teaching English to Red Cross volunteers and developing environmental education projects. English lessons for adults have also proved to be popular in many villages. Volunteers often find that there is a wealth of service opportunities outside the classroom and that the host community welcomes their involvement.