The present disclosure relates to a method for providing on-line textbooks to students. The method may use a server having a memory. The server memory may be loaded with an electronic bookshelf accessible by a student and by a teacher through a log-in procedure while accessing a log-in portal. The electronic bookshelf may be populated with standard electronic textbooks that may be accessed and downloaded over a network by the student, with each standard electronic textbook including at least one lesson plan for a given subject. The electronic bookshelf may also be populated with at least one customized electronic textbook that may be accessed and downloaded by a student. The customized electronic textbook may be further modified to create a student version and a separate teacher version, with the teacher version including supplementary material of interest to the teacher for the lesson plan contained in the customized electronic textbook.