PREFACE
Grateful acknowledgment is due the principals of each of the high schools whose records are included in this study, for the courteous and helpful attitude which they and their assistants manifested in the work of securing the data. Thanks are due Dr. John S. Tildsley for his generous permission to consult the records in each or any of the New York City high schools. But the fullest appreciation is felt and acknowledged for the ready criticism and encouragement received from Professor Thomas H. Briggs and Professor George D. Strayer at each stage from the inception to the completion of this study.
F.P.O.