hey hey ,cz i was personally interested in this and came across it today so jst wanted to share:
i found this place at the corner of sihanouk (274) with Riverside (sisowath)called mittapheap driving school which is pretty awesome .. for 120 $ they give 20 days of driving lessons , half hour per day and the exam costs 50 $ and the driving licence is given by the ministry of transportation and is valid for 5 years. they teach in english !! ..
jst in case there are other people like me around here who are interested in getting a driving license N they don't know how to drive
thought its helpful