Professional Master's or master's degrees usually takes one to two years of full-time study. Requirements for an academic master's degree include taking a minimum number of advanced graduate classes (typically between five and eight) and submitting a research thesis which is examined orally by a panel of at least two examiners (three is the preferred number), sometimes including one external member who must be from another university or research institute. The emphasis of the thesis must be in adding some value to the academic knowledge, but not necessarily in being original.