The first Montessori school was founded in Rome in 1907. There was interest in Montessori's methods in the United States between 1910 and 1920, but these methods were forgotten until after 1950, when a second Montessori movement began in the United States. Some schools with Montessori programs are affiliated with the Association Montessori…

A confusing variety of terms is used in discussions of age grouping practices. This digest examines terms that have important implications for teaching and the curriculum. The terms "nongraded" and "ungraded" typically refer to grouping children in classes without grade-level designations and with more than a 1-year age span.…