This book is different than its predecessors in that it identifies and synthesizes twelve key constructs that have important implications for both administrators and researchers; these constructs guide administrators engaged in meaningful school improvement efforts and provide researchers an agenda for future study. The articles of the book capture decades of theoretical and research work. Essential Ideas for the Reform of American Schools identifies and synthesizes key constructs that have important implications for the improvement of schools. The articles have been written over a period of several decades and are grounded in theoretical analysis and empirical research. Together they form a coherent body of literature for both practitioners interested in improving schools and researchers committed to the study of school effectiveness.