This study investigates the teachers’ perception concerning the education for digital culture included in various subject-matters instructions in secondary classrooms. We investigate the relationships among the teachers' satisfaction, effectiveness of digital culture class, perceived level of easiness, class contents, perceived level of cyber culture, and support from government and schools. Based on responses from 355 teachers who have experiences of teaching digital culture and related topics, we empirically test a set of research hypotheses. Statistical results show that effectiveness of digital culture class and the perceived level of easiness have a salient effect on satisfaction. Class contents as well as support from government and schools also influences the perceived level of easiness. But perceived level of cyber culture was found not to be significant to the effectiveness of digital culture class. In addition, respondents perceive that systematic class contents for digital culture need to be developed based upon the long-term plan, and that inter-relatedness among various subject matters or fields needs to be established. As a conclusion, it is strongly suggested that to achieve the fundamental goal of effectively teaching digital culture in various subject classes, teachers' positive perception of digital culture needs to be established.