Complex sentence: Weddington High School currently offers a Marine Corps JROTC program, which became operational in the 2013-2014 school year instructed by retired Marines Lieutenant Colonel David Morgan and Sergeant Major Matthew Brookshire.
Split into simpler sentences: Weddington High School currently offers a Marine Corps JROTC program. The MCJROTC program became operational in the 2013-2014 school year and is instructed by retired Marines Lieutenant Colonel David Morgan and Sergeant Major Matthew Brookshire.