Movie about a boy whos gets kicked out of every private school and has to go public school?

There isn't one single, universally known movie that perfectly fits that description. Many films feature a character expelled from multiple schools, but the focus might be on different aspects of their story. To find a movie that closely matches, you'd need to specify other details, such as:

* The boy's personality: Is he a troublemaker, a genius who doesn't fit in, or something else?

* The reason for expulsion: Is he academically deficient, socially awkward, or does he cause trouble intentionally?

* The tone of the movie: Is it a comedy, a drama, a coming-of-age story?

With more information, I could give you a more precise recommendation. However, some films that *partially* fit this description and might be worth checking out include:

* School-based comedies: Many comedies feature students who are rebellious or misfit in some way, although they may not get kicked out of multiple private schools. Think of movies like *Ferris Bueller's Day Off* (though he's not kicked out) or even some aspects of *Napoleon Dynamite*.

* Coming-of-age stories: Films that focus on a character's transition to adulthood might include a school change as a plot point. Consider looking for movies with themes of social adjustment and finding your place.

To help me narrow it down, tell me more about what kind of movie you're looking for!