In this report, SREB compares schools in the MMGW initiative that have more fully implemented the MMGW research-based design with others that have been defined as low-implementation schools. The report shows clear differences in the achievement levels and academic success of these two groups of schools. The report also shows that dynamic, sustainable middle grades reform is far more likely to occur when district leaders, principal leaders and teacher leaders are all committed to the same improvement goals and means of achieving them.