Any advice about which truck driving schools around Los Angeles give the best training for tankers?

I've got a job lined up, if I want it, hauling tankers containing petroleum products to and from oil refineries in the Southern California area. However, before I can take the job I need a Class A CDL with a tanker and haz-mat endorsement. For this I'll need truck driver training. With the many truck driving schools in the LA area, can anyone give me some sound advice about which ones are the best and which give training for the type of rig and materials I'll be driving? Thanks!