Whole School Approach (WSA) is a participatory and continuous process of mainstreaming sustainability as a default into all areas of school action and culture. According to a paper published in the Journal of Cleaner Production, August 2025, various guidelines and programmes were initiated to support the implementation of WSAs. Internationally, the implementation has been recommended by UNESCO (2020-21) and the European Union (2022).In Germany, where the 16 states hold the primary responsibility...

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