Schools with large grounds could be divided into several areas/spaces, including an allotment style section for growing food and nurturing wildlife, a sports area for games and recreation and an outdoor shed space for building and constructing stuff.

Current school buildings could be turned into learning hubs for workshops and learning in different formats to take place.
Within existing school buildings, IT suites could remain or be altered for learning about tech, etc. Art departments could remain but be tweaked to have rooms for different kinds of art projects. Other (class)rooms could be themed and geared up for visiting speakers, including local expertise, to run workshops or sessions open to the whole community, not just children and young people, on a wide range of subjects and interests.

Obviously, it is important to have basic knowledge and skills in fundamental subjects that enable us to carry out everyday activities and jobs, so the core subjects, Maths and English, will remain on a curriculum. The depth of knowledge of each of these, however, will depend on individual pupils and students who may choose to just learn the basics or discover a passion that they wish to develop.