Complex sentence: Bangladesh Air Force's Shaheen College, or B A F Shaheen College, is a privatized educational institution run by Bangladesh Air Force; and has the largest primary, secondary and higher secondary student population in Bangladesh.
Split into simpler sentences: Bangladesh Air Force Shaheen College, or B A F Shaheen College, is a privatized educational institution run by the Bangladesh Air Force. It has the largest primary, secondary and higher secondary student population in Bangladesh.