Sorry, I mean: How long does it take a Ph D and anA M.. In our country, it's different to the USA. People tell me Diploma in USA is more difficultt to get than in ours. I think Doctorat , may be the same as Doctor so I ask you to compare in order to grasp the meaning.
Bachelor of Arts / Bachelor of Science (BA/BSc) - The first degree that is taken at university following the completion of high or senior school. People taking these courses are referred to as under graduates. Typically this degree course takes three years
Master of Arts / Science (MA/MSc) - The next level up from