Most American schools take a 10- to 11-week break during the summer. The assumption that underlies summer vacation — that there is one parent waiting at home for the kids — is true for just over a quarter of American families. For the rest of us, the children are off, the parents are not. We can indulge our annual illusion of children filling joyful hours with sprinkler romps and robotics camp or we can admit the reality: Summer’s supposed freedom is expensive.

In Marin, thousands of families face the same issue. The most affordable Summer Camps can cost $180/week (Novato).