Simplify the following text for a Grade 7 native English-speaking person.
Original: After some years of work experience , he studied at the MIT Sloan School of Management ( 1971 -- 72 ) in the Sloan Fellows program and earned a Master of Science ( M.S. ) degree .
Simplified: He was a Sloan Fellow at MIT in 1971 â `` 72 , getting a master 's degree in management .