Abstract
In the high school education, "Information Study" is prepared for the primary education which should be the part of basic knowledge for IT engineers. Currently, there are thirteen textbooks for two subjects, "Information Study for Participating Community" and "Information Study by Scientific Approach". In each textbook, not only theories but also practices are explained. However, especially in some description of the practices, we can found several dependencies in a particular platform, which disturbs the publicness of textbooks. In this study, we have conducted comprehensive study over all of the thirteen textbooks. The platform-dependent problem and its solution are described in this paper.
