I don't know if you are open to private schools but I was just at Summit College in Anaheim
the other day taking my CNA test and I know they have an LVN program. I think they even have a part-time program. I would give them a call.
Also, depending on where you are in Orange County, if Long Beach is not to far there is a school in Signal Hill called Preferred College of Nursing
one of the LVN's at my CNA clinical rotations went there and said she enjoyed it. I looked into it but the next class did not start until May I think and I needed something sooner. They do have a part time program though. Casa Loma
college also ave a campus in Anaheim. I know a lot of people who went there and they LOVED it and the price is affordable. They used to offer a part-time program but canceled it this year. I called them a few weeks ago and they said they are going to bring it back for next term. I met with them last year, took there test and was all set to sign up but at the last min changed my mind because their campus was WAY to far from me (Torrance) and I live in Whittier. With class starting at 7am I would of had to wake up at 4am to get there on time (After I dropped my daughter off at daycare).