Connie Mack is more widespread in southern California than northern, but both ends of the state have very high level, competitive leagues. Northern CA had 17 teams competing this past summer, and it is the highest level of baseball that a high school aged player can participate in. Many of our teams have anywhere from 5 to a dozen or more of their players who are headed off to play D1 or other levels of college baseball in the future.
It's the best 18u baseball out there in northern CA for anyone fortunate enough to compete for one of the teams.