41 Educational services, namely, development and dissemination of educational tools, content, and materials to students, teachers, professors, and other educators at the high school and undergraduate levels via the internet, namely, digital textbooks, articles, instructors manuals, and supplementary reading materials, instructional materials in the nature of self-assessment and study tools for students, homework assignments, course assessment and course management materials all for use in connection with the study of chemistry, physics, astronomy, biology, economics, mathematics for high school and higher education; providing non-downloadable publications in the nature of digital textbooks in the fields of science, math, economics, and science, math and economics education; providing educational information for the purpose of academic study, namely, non-downloadable interactive digital textbooks, in various disciplines taught in high school education through higher education; educational services in the nature of a web site featuring online homework management for courses in chemistry, physics, astronomy, biology, economics, mathematics for use in high school and higher education courses; providing searchable databases of homework and test questions and answers in the fields of mathematics, science and economics