Essential principles of teaching reading and literature in the intermediate grades and the high school This book, "Essential principles of teaching reading and literature in the intermediate grades and the high school", by Sterling Andrus Leonard, is a replication of a book originally published before 1922. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.