Greengates School () is a British-style international school located in the Balcones de San Mateo neighbourhood in Naucalpan, located north-west of Mexico City metropolitan area, in the State of Mexico. As of 2015, it has approximately 1,150 students of some 60 nationalities, derived mainly from the diplomatic and international business communities. During forms 4 and 5 (grades 9 and 10 in the American System), students study for the IGCSE (International General Certificate of Secondary Education) examinations, while in their last two years of high school (Sixth form), students prepare for the International Baccalaureate Diploma.