Complex sentence: The Summerville Marching band (SHSCPE) hasn't placed outside of the top 5 in South Carolina since 2004, and is a 6 time South Carolina state champion most recently in 2014.
Split into simpler sentences: The Summerville Marching Band (SHSCPE) has not placed outside of the top five in South Carolina since 2004. It is a six-time South Carolina state champion, winning most recently in 2014.