Complex sentence: Under the stewardship of the Board of Directors, the school rose to higher levels of credit and standard when its BS Aeronautical Engineering graduates continuously topped the PRC's Licensure Board Examination for Aeronautical Engineers since its inception in 1983.
Split into simpler sentences: Under the stewardship of its Board of Directors, the school rose to higher levels of credit and educational standards. Its BS Aeronautical Engineering graduates regularly topped the PRC's Licensure Board Examination for Aeronautical Engineers from its inception in 1983.