Indonesia has experienced a number of disasters recently causing enormous losses to the community, both materially as well as spiritually. The contributing factors to this incident include the low level of public environmental awareness. For this reason, the efforts to educate people and students are necessary. One of the important elements of this effort is the availability of books concerning with ecoliteracy. This study aims at explaining the ecological literacy values in Indonesian language textbook for senior high school students based on Educational Unit Level Curriculum. In this study, there are three books analyzed using document analysis as data resources. To examine the ecological literacy values both descriptive and distributive, content analysis is used as the main method. Content analysis can be either quantitative or qualitative, or both. The study used a mixed approach to analyze both qualitative and quantitative data in a single study with "the purpose of gaining insight and extensive and profound proof". Based on the analysis result, the ecological literacy values include (1) ecological knowledge (63.5 %), (2) affective tendency (11.7 %), (3) behavior (11.7 %), and (4) cognitive skills (12.9 %). It can be concluded that the ecological literacy value is still dominated by ecological knowledge.