Articles in this special section by middle-school educators describe the multi-age team (MAT) experiment at a Georgia middle school from 1993 onward. In 1992, a project inspired by "Turning Points" recommendations addressing teacher and administrator empowerment was launched at another Georgia school. (MLH)

An evaluation of a Georgia middle school's multi-age grouping program revealed significant progress regarding student self-esteem, achievement, community building, and teacher collaboration. The Crabapple experience illustrates how one model of student-centered, developmentally appropriate, and integrated learning can benefit middle-level…