Final answer:
The school strategy described is known as Environmental stewardship. It involves students in waste segregation and cleanliness activities to create a cleaner school community.
Step-by-step explanation:
The school strategy described in the question is known as Environmental stewardship. Environmental stewardship refers to the responsible and sustainable management of resources and actions that protect and preserve the environment. In this case, the strategy aims to involve students in waste segregation and cleanliness activities to create a cleaner school community.