To improve the quality of instruction and the achievement of all students, effective school leaders develop capacity, advocate, and create support systems for professional learning. Creating a team of teachers to share leadership, responsibility, and accountability for achieving collective goals is essential. This was the task of a first-time…

This report by the American Federation of Teachers (AFT) is the first comprehensive effort to assess student achievement in public schools managed by Mosaica Education, Inc., one of the leading private management companies in education, marketing itself to charter boards and school districts since 1997. Schools examined in the report had been…