Greengates School is a private British-style, international school located in San Mateo in the northwest of Mexico City, Mexico. It was founded in 1951 and was originally located at Avenida Chapultepec 490 also in Mexico City with 60 students, 6 teachers, one matron and one secretary. As the school grew steadily it moved several times over the next few years. Eventually in 1964 the present piece of land in San Mateo was purchased. As of 2005, it has approximately 1,150 students of some 50 nationalities, derived mainly from the diplomatic and international business communities.
In the senior school years 4 and 5 study for IGCSE (International General Certificate of Secondary Education) examinations, which in the sixth form students prepare for the International Baccalaureate Diploma.
The school preserves the philosophy of its founding statement: "...to provide an education for students which seeks not only to impart knowledge by the means of acquiring knowledge; to develop character and personality through self-discipline and service; to equip its pupils not only to earn their living but also to live creatively and happily in the world which they must inherit".