How well do Montessori students do compared to students in non-Montessori schools?

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.