|High School:||Glenpool HS|
Prior to Southern: A 2013 graduate of Glenpool High School, Castoe comes to Southern after being a four-year starter at centerfield/ shortstop at GHS, winning the district championship three times in 2009, 2010 and 2011. This past fall, Castoe was a 2012 Class 4A Oklahoma All-State nominee. A two-time All-Conference selection in 2010 and 2011, Castoe was named Honorable mention All-Metro in 2011 where the Warriors finished the year as regional runner-up. A four-year letterwinner in softball, Castoe was a member of ESPN RISE magazine in 2009. Castoe also played three years of club softball for Tuff E Nuff and coach Tim Stone and Tulsa Shootout Gold coached by Tim Burton.
In addition to softball, Castoe also lettered in four other sports at Glenpool becoming the only female in Glenpool High School history to letter in five sports. Castoe lettered two years in basketball for coach Tony Blades playing as a freshman and senior. She also lettered two years in soccer as a junior and senior for coach Jason Nussbaum reaching the second round of the playoffs in 2012. A two-year letterwinner in track as a freshman and senior, Castoe went to state as a part of the 4x100m, 4x200m and 4x400m relays a freshman in 2010. Finally, Castoe lettered one year in cross country as a freshman in 2010 reaching the State Championships.
Personal: Jessica is the daughter of John and Tammy Killer and plans on majoring in kinesiology at Southern.