Kids are curious, so I guess one could work with that. If they are permitted, they will ask a million questions to grown ups when nobody stops them, and can spend hours trying to figure something out.

I would like 'school' to be an environment where this can happen safely. Smaller kids might have a more traditional school where several adults supervise them, answer their questions and show them how to do stuff. The school grounds have a library and several different workshops or rooms for different activities. Of course older kids will go out (under supervision when they are younger, alone when they get older) and learn directly from professionals. Professionals might book regular teaching sessions (to avoid too many interruptions during work) as part of their job.