Disaster preparedness has been recognized as a central element in reducing the impact among schools. Every educational institution must develop skills and understanding in initiating active responses and increasing community awareness and participation in environmental concerns. This study aimed to identify the existing programs and the extent of practices in disaster preparedness and environmental sustainability. A total of seventy – five (75) respondents represented the sample of the present study. This study used mixed method approach through the use of questionnaires in gathering necessary data and focus group discussion. Data gathered were statistically analyzed using Paleontological Statistics software package for education and data analysis (PAST version 3.16). Correlation Test from PAST version 3.16 was used to determine the relationship between disaster preparedness and environmental sustainability and demographic profile of the respondents. One-way analysis of variance was used to identify the differences on the assessed practices. Results of the study revealed that schools need to institutionalize disaster risk reduction management policies and structures for the full implementation of the program. A proposed action plan was developed to assists teachers in enhancing the practices in disaster preparedness and environmental sustainability.