SoCal ASA keeps travel (Class A) and rec (Class B) separated. They heavily regulate how rec leagues operate to be eligible for Class B championship play. From their regs:The core ASA rules actually make it mandatory to participate in a rec league in order to play B class travel ball. Many organizations get away with pathetic interpretations of "participate" though.
A recreation league is defined as follows:
1. An organized league that is associated with a recognized neighborhood or community.
2. Participation is open to any interested youth.
3. Tryouts or demonstration of skills is not required for participation.
4. Some type of draft, draw or other acceptable method is used to ensure equitable distribution of talent amongst all the league teams.
5. All teams must be approved by the league Board of Directors.
NOTE: Leagues that split their Age Classifications based on skill level must have at least six teams in the advanced classification, regardless of the method used to create the split Age Classification, including but not limited to player evaluations, league assignments and/or parent requests.