Ayub
There is the FAA Aircraft Dispatchers License which is specific to the US FAR system of regulation; then there is the ICAO recommended course syllabus which is to the ICAO Doc 7193 D3 Flight Operations Officer/Dispatcher training which is universal and forms the basis for training in countries not using the FAR system of flight dispatch.
I'd go on to Sheffield's website for a complete brief, but yes- they will get you through the FAA license exams.