The research will be conducted to determine the effect of "I Recycle, I Protect the Environment, I Leave a Livable World as a Legacy" program on secondary school students' recycling behaviour.

Recycling is crucial for environmental health as it plays a significant role in the protection of the environment, the conservation of natural resources, and the reduction of energy consumption. The Sustainable Development Goals (SDGs) are fundamentally centered around the themes of water management, energy sustainability, and responsible consumption and production practices. Without proactive measures to safeguard environmental health, the world is likely to encounter significant challenges related to water security, food supply, and the sustainability of natural resources in the future.

The study intervention was meticulously formulated on the basis of the Planned Behaviour Theory, encompassing a training programme focused on secondery school students' recycle behaviour. The training program includes topics such as environmental pollution, recycling behaviors, and the protection of natural resources and ecosystems. In addition, the program incorporates activities such as games, puzzle, brainstorming sessions, and the creation of painted cloth bags.

Inclusion Criteria:

Being 10-14 years old and attend the school where the study is being conducted, Voluntarily agree to take part in the research,

Exclusion Criteria:

Having received previous education on environmental health

Masking will not be possible due to the method of application of this study. However, the data collector, statistician and reporting will be masked during the research process. In the research process, pre-test data will be collected by the teachers working in the study school. The post-test data will be collected by another researcher (a researcher trained in the data collection form and trained in the field of nursing student).