What kind of things does the judge look at to order joint custody?

See CA Family Law Code 3040 - 3048 http://www.steveshorr.com/MATTERS_CONSIDERED_IN_GRANTING_CUSTODY.htm#custody many things come into play here. even though not required, a judge would be hard pressed not to consider things such as criminal history, job status, and area of residence. there needs to be a simple stable environment for the child to function well and possibly attend school. get whatever you are seeking in writing signed by a judge and argued by a lawyer. best of luck.