There is a small but growing body of well-designed research comparing Montessori students to those in traditional schools. These suggest that in academic subjects, Montessori students perform as well as or better than their non-Montessori peers.
In one study, for example, children who had attended Montessori schools at the preschool and elementary levels earned higher scores in high school on standardized math and science tests. Another study found that the essays of 12-year-old Montessori students were more creative and used more complex sentence structures than those produced by the non-Montessori group.
The research also shows Montessori students to have greater social and behavioral skills. They demonstrate a greater sense of fairness and justice, for example, and are more likely to choose positive responses for dealing with social dilemmas.
By less stringent measures, too, Montessori students seem to do quite well. Most Montessori schools report that their students are typically accepted into the high schools and colleges of their choice. And many successful grads cite their years at Montessori when reflecting on important influences in their life.