Erin Richards:

A study of Milwaukee schoolchildren published today in the journal Science underscores what proponents of Montessori education have believed for decades: that Montessori students might be better prepared academically and socially than students in traditional classrooms.
Among the findings: 5-year-old Montessori students had better reading, math and social skills than 5-year-old non-Montessori children, and 12-year-old Montessori students wrote essays that were more creative and sophisticated than those by 12-year-old non-Montessori students. The study tested two groups of Milwaukee Public Schools students: those who by luck of a lottery got into Craig Montessori on the city’s northwest side, and those who didn’t.
It reaffirms the benefits of a system started by Maria Montessori 100 years ago, local administrators said, while also boosting the reputation of a city that has increasingly made public school Montessori options available to a poor, urban population.