Not sure if they have 'English' speaking staff or have near you, but there are driving schools where you WILL pass the test, and on their motorbikes, long way from you but the one one in Chanthaburi a few years ago was 1,000 B for motorbikes. its almost impossible to fail, as you can try try again until you pass, then it was one day later you took their test, they then take you to the transport office where your license will be issued. (they also take you to get the med cert.)