The basic idea is to have a large group of parents organized together. They take turns. So every week, one parent will spend one day to either teach the kids some class such as music, or taking the kids to their company such as an accounting firm, a law firm or a news publishing company, to learn about how adults work in their profession.
If the group is big enough, kids should have chance to be exposed to many things. Of course, this alone cannot address all problems of children’s learning. But it can be an important part of it.