Complex sentence: The Red Tornadoes JV Football program has slumped from having a 10-0 season in 2007 their 5th consecutive and 6th in the 7 years prior to so, to the 2011-12 season in which they finished with a 6-4 record.
Split into simpler sentences: The Red Tornadoes JV Football program has slumped from havinga 10-0 season in 2007 their 5th consecutive and 6th in the 7 years prior to that. In the 2011-12 season they finished with a 6-4 record.