The American School Foundation of Monterrey is a private, international, nonprofit, and co-educational Nursery-12 school located in…The American School Foundation of Monterrey is a private, international, nonprofit, and co-educational Nursery-12 school located in Monterrey, Mexico. It is one of a few American-style educational centers in this city and is notable for being the oldest one of that group. This theme is intended for educational purposes only.