TASIS Schools, formally established as the TASIS Foundation, is a private Swiss foundation which operates a group of four international schools (including both day and boarding schools), operating in Switzerland, England, Portugal, and Puerto Rico.
The group originated with the foundation of its first boarding school, TASIS Switzerland, in Lugano, Switzerland, in 1956.
TASIS England was founded in 1976, in Thorpe, Surrey, outside of London.
TASIS Dorado was founded in Puerto Rico in 2002.
TASIS Portugal was founded in 2020, in Linhó, Sintra on the Portuguese Riviera, outside Lisbon.