Day schools don’t last forever, but they should. Here’s the typical pattern: Parents send their kids to a day school. The kids graduate. The parents become uninvolved. The kids, well, they grow up. They get married, have kids and, if everything goes as hoped, send their children to day school. This is a flawed model. The huge gap in a family’s active day school engagement is one reason that schools face such serious sustainability issues, and why they serve only a small fraction of the population. The solution to this problem — and perhaps to the problem of Jewish day schools in general — is that the schools need to think bigger.