This study was intended to display the role of eco-school program (Adiwiyata) towards environtmental literacy (EL) of high school students by analyzing, (a) EL of students in Adiwiyata and non-Adiwiyata high schools, and (b) EL of students in Grade X and XI, Adiwiya and non-Adiwiyata high schools in Malang-East Java, Indonesia. The survey involved 275 students. The respondents were from four state high school i.e. SMAN 1, SMAN 3, SMAN 4, and SMAN 7. Data were taken via MSELS questionnaire that was modified and filled online. Aspects of EL include ecological knowledge, environmental affect, cognitive skills, and behavior. The results of multivariate analysis showed that the level of students’ EL was significantly influenced by school type and grade. However, the interaction both of them had no significant effect on their EL. Univariate results on school type factor informed that significant differences occured in all aspects of EL, where the lower identified level of students in Adiwiyata schools compared to Non-Adiwiyata was only in the environmental affect. On the other hand, the significant influence of grade level only occurred in cognitive skills aspect. Broadly speaking, all data analyzes concluded that the application of the Adiwiyata program was able to bring a positive impact on the level of students’ EL. There was also a tendency that the higher the student's grade, the better their EL level.

This research aims to develop Indonesian Language textbooks with multiculturalism and character education for traditional poetry writing learning. This research uses a research and development approach until the discovery of a proper textbook. The subjects involved in this study were 101 elementary school fourth-graders, 33 teachers, and 2 Indonesian language and literature learning experts. Data analysis techniques at the need analysis stage through interactive models, and data analysis at the product testing stage using quantitative techniques with non-independent t-test statistics. Preliminary studies found that teachers and students needed creative writing skills textbooks developed by integrating the values of multiculturalism and character education. Textbook development referred to aspects of content, language, presentation, and graphics. Limited textbook product testing using t-test showed that t-obtained= -4,265 and t-table on α = 5 % is 2,064, so H0 is rejected. Broad testing also resulted in    t-obtained= -6,426 and t-table = 2,004, so it can be decided that H0 is rejected. Students' traditional poetry writing skills after learning using textbooks are better than before learning using textbooks. Thus it is concluded that the textbooks developed are inferred worthy of use by teachers and students to improve their writing skills in elementary school.

Many researchers have separately developed instruments to measure environmental characteristics such as attitudes, values, and knowledge. However, there is no instrument used to measure all these aspects in one comprehensive instrument. This study is meant to develop and validate a green character instrument which reveals student behavior and awareness of the environment. The instrument consists of 40 statement items consisting of 5 aspects, namely private pro-environmental behavior, public pro-environmental behavior, environmental knowledge, environmental values, and environmental attitudes. It was implemented on 1,398 students from 15 universities in Indonesia. The instrument content validation was analyzed by three experts using content validity index (CVI). The construct validity was analyzed using exploratory factor analysis, confirmatory factor analysis, and RASCH analysis. The content validity results obtained CVI scores ranging between 0.8 and 0.9 with a good category, while item reliability was in a fairly good category with a high level of separation index. Construct validation resulted in 34 items (4 items were eliminated after Exploratory and Confirmatory Factor Analysis, and 2 items were eliminated after RASCH analysis) spread over five constructs, namely environmental behavior, environmental knowledge, environmental values, environmental attitudes, and environmental habits. The resulting instrument has a good level of item difficulty, with a well understood response set which can be understood easily by respondents, and without bias. Therefore, it can be used to measure the students’ green character on both male and female.