Maria Montessori Children's School Foundation, Inc. or MMCSFI began in 1971 as the Maria Montessori Cooperative School (MMCS). It was founded by a group of parents and teachers who sought to establish a school that remained faithful to the crucial tenets of Montessori education. From a borrowed classroom in Forbes Park, the cooperative moved to Vito Cruz St. in June 1971, where it stayed for the next four years.
In 1975, MMCS founded a new home at 50 Williams St. in Pasay City. The largest residence located in a compound approximately 4,000 square meters in size, was converted into a classroom. As the school grew in population and echoing the educational program's need for full day classes, structures were added and existing spaces remodeled to accommodate both the Children's House and the Elementary classes.