Assalam u Aleykum:
I don't think so that higher education qualification helps u to pass the css exam. The css exam is itself a field for specialization in daily knows-how’s, science, history, and many more subjects. May b the subject in which u have your M.phil or PhD, is related to css subjects like inter.rela, pol scie, Law, Economics, or eng litera; in that case it really helps you in the exam, and interview hope your Q is answered .



Regards
Atif Rana