Publishing services, namely, publication of books, electronic books, course materials and customized publications; online educational services, namely, providing online courses of instruction at the pre-school through high school levels; online educational services, namely, classes, workshops provided to educational institutions and school districts in the fields of assessment and improvement of student learning, instructor training, curriculum development, course management, and distribution of printed and electronic materials in connection therewith; development of educational tools, content, and materials of others via a global computer information network in connection with classes offered from the pre-school, elementary, middle school and high school levels, namely, digital textbooks, instructor's manuals, supplementary reading materials, instructional materials in the nature of study tools for students, homework assignments, course assessment; providing online non-downloadable educational computer games; providing seminars in the fields of teacher training and professional development; providing distance learning at the pre-school through high school levels; educational services, namely, conducting teacher training workshops and seminars related to nationwide and state-specific curriculums for pre-school through high school students; publication of teachers' workbooks and training manuals related to pre-school through high school educational curriculums, textbooks, workbooks and magazines; providing an on-line computer database in the field of pre-school through high school educational curriculums; electronic publishing services, namely, publication of text, software and graphic works of others on-line featuring teaching materials in the field of pre-school through high school educational curriculums; providing online non-downloadable podcasts in various disciplines at the pre-school, elementary, middle school and high school levels; providing online non-downloadable electronic books, namely, educational workbooks for students, educators, administrators, teachers, parents, mentors, tutors, and others involved in assisting students featuring various disciplines at the pre-school, elementary, middle school and high school levels; providing an online virtual environment for course instruction at the pre-school through high school education levels