This OSOW framework has been developed jointly with schools of all phases and types so it can be used in all settings. It is to be used as a guide to best practice which schools can action plan against, and evaluate progress towards, becoming truly sustainable organisations. A school does not need to follow it step by step however, many of the actions require previous work to have been accomplished to be effective. On the other hand, some actions can be implemented independently. There is also no timeline associated with the framework. Many schools do succeed in launching the progamme, training staff and developing the curriculum during the first year however, schools can work at their own speed given their capacity and other pressures e.g. Ofsted window.