The suitable framework will enable schools to perform "Adiwiyata" in the best way based on their local potentials. The aim of this research was to get better knowledge about the conditions of schools awarded "Adiwiyata" as well as to analyze the specific strategies to create sustainable development of those "Adiwiyata" schools in Sintang district. This qualitative descriptive research used purposive sampling technique in which the participants were SDN 7 Sintang, SMPN 3 Sungai Tebelian, and MTsN Sintang. The data was collected through questionnaire, in-depth interview, and field observation. The data gained were analyzed using SWOT. The results indicated that the all "Adiwiyata" schools achieved outstanding scores (73.15 for SDN 7 Sintang, 70.40 for SMPN 3 Sungai Tebelian, and 68.13 for MTsN Sintang). Based on the SWOT analysis, the specific strategies to develop "Adiwiyata" schools in Sintang district were by utilizing of local unique including planting local plants, developing local culture and tradition on mutual collaboration with surrounding community, and increasing partnership with environmental agencies and the other third parties in building human resources who were reliable in maintaining environmental school program.