Complex sentence: The original campus in Pine Beach closed in 1994 and most buildings were demolished in 2003, but the St. Petersburg campus continues to operate under the leadership of headmaster Capt. Robert J. Fine, enrolling some 450 cadets from pre-kindergarten through the twelfth grade.
Split into simpler sentences: The original campus in Pine Beach closed in 1994 and most buildings were demolished in 2003. The St. Petersburg campus continues to operate under the leadership of headmaster Capt. Robert J. Fine, enrolling some 450 cadets from pre-kindergarten through the twelfth grade.