Maria Montessori (August 31, 1870 - May 6, 1952) was an Italian physician, educator, philosopher, humanitarian and devout Catholic; she is best known for her philosophy and method of education of children from birth to adolescence. Her educational method is in use today in a number of public as well as private schools throughout the world. The American Montessori Society was founded in 1960.
Maria Montessori was born in Chiaravalle (Ancona), Italy to Alessandro Montessori and Renilde Stoppani. Montessori was the first female to graduate from the University of Rome Medical School. She was a member of the University's Psychiatric Clinic and became intrigued with trying to educate the "mentally retarded" and the "uneducable" in Rome. Because of her success with these children, she was asked to start a school for children in a housing project in Rome, which opened on January 6, 1907, and which she called "Casa dei Bambini" or Children's House. The success of this school sparked the opening of many more, and a worldwide interest in Montessori's methods of education.
Maria Montessori died in The Netherlands in 1952, after a lifetime devoted to the study of child development. Her early work centered on women’s rights and social reform and evolved to encompass a totally innovative approach to education. Her success in Italy led to international recognition, and for over 40 years she traveled all over the world, lecturing, writing and establishing training programs. In later years, ‘Educate for Peace’ became a guiding principle, which underpinned her work.
After the 1907 establishment of Montessori's first school in Rome, by 1913 there was an intense interest in her method in North America, which later waned. (Nancy McCormick Rambusch revived the method in America by establishing the American Montessori Society in 1960). Montessori was exiled by Mussolini mostly because she refused to compromise her principles and make the children into soldiers. She moved to Spain and lived there until 1936 when the Spanish Civil War broke out. She then moved to The Netherlands until 1939. During a teachers conference in India she was interned by the authorities and lived there for the duration of the war. Montessori lived out the remainder of her life in The Netherlands, which now hosts the headquarters of the AMI, or Association Montessori Internationale. She died in Noordwijk aan Zee. Her son Mario headed the American Montessori International until his death.
Aside from a new pedagogy, among the premier contributions to educational thought by Montessori are:
A conference in Rome on 6/7th January 2007  heralded the start of a year of celebrations for children and schools around the world. Dr. Maria Montessori’s innovative approach was that “Education should no longer be mostly imparting of knowledge, but must take a new path, seeking the release of human potentialities.”
What followed worldwide has been called the "discovery of the child" and the realization that: "...mankind can hope for a solution to its problems, among which the most urgent are those of peace and unity, only by turning its attention and energies to the discovery of the child and to the development of the great potentialities of the human personality in the course of its formation.”
The efficacy of Montessori teaching methods has most recently been demonstrated by the results of a study published in the US journal, Science (29 September 2006)  which indicates that Montessori children have improved behavioral and academic skills compared with a control group from the mainstream system. The authors concluded that, "when strictly implemented, Montessori education fosters social and academic skills that are equal or superior to those fostered by a pool of other types of schools."
The Montessori method of education that she derived from this experience has subsequently been applied successfully to children and is quite popular in many parts of the world. Despite much criticism of her method in the early 1930s-1940s, her method of education has been applied and has undergone a revival. It can now be found on six continents and throughout the United States.
Her teaching strategies have also been praised by philosopher and novelist Ayn Rand, who considered Montessori's methods, and their revival in The United States in the 60s, as a more individualistic and reason-based alternative to what she saw as the shortcomings of progressive education.