The choices in school courses incline to the mainstream value of culture, so the ideology that influences classes and groups can be, through school education, transmitted into a "common ideology or value of society." Because textbooks are the concrete practice of school courses, the analyses of the contents of textbooks can reveal the truth of the ideology hidden under the text so that we can also understand how they work in politics, economics, society, and culture through the text. The analyses of textbooks with the functions above have risen constantly the attention of course researches, which also accumulate a number of studies so far. Yet the past studies focused on the ideology of the text affected by the nation, the politics, and the economics more than the effect of the ideology on the belief in social class. In order to make up for the flaw, the essay begins with a national sample study on an investigation of the causes of success of people to survey whether the ideology in the textbooks is related to the inner factors predominating the thought of people in Taiwan such as "You can get anything for nothing." "Where there is a will, there is a way." The result of the study shows that the articles emphasize the kind of ideology can be found everywhere in Mandarin textbooks at grade schools, where the contents of textbooks have stressed the ideology, including you can get anything for nothing or where there is a will, there is a way. There is good reason to believe that after 12-year education at elementary, junior, and senior high schools, the belief that "You can get anything for nothing." Will be rooted in students' hearts. Although the achievement of people will be mostly decided by their backgrounds in Taiwan society and the real situation in the world does not correspond with the ideology molded at schools, students will not change the belief learned from schools even after entering into the society and becoming one part of it. The result of the study has proved the influence of the contents of textbooks on students, people, or even the society.