On April 25, 2008, Steltz's jersey was officially retired during a school-wide assembly in the Archbishop Rummel High School gymnasium.

He was a team captain who led a ferocious defensive unit that spearheaded the Raiders to an 8–2 district championship season and regional round playoff berth.

[4] On October 31, 2003, against district rival Jesuit High School, Steltz rushed for 170 yards in the second half on seven carries and scored three touchdowns and a two-point conversion in the fourth quarter to lead the Raiders to a 38–27 victory.

[5] Steltz enrolled at Louisiana State University, where he played for the LSU Tigers football team from 2004 to 2007.

[6] General Manager Jerry Angelo originally intended for Steltz to be the team's starting free safety for the 2009 NFL season.

In the 2011 season, after injuries to Major Wright and Chris Conte, Steltz became a valuable contributor to the defense, recording 38 tackles, behind Pro Bowlers Brian Urlacher, who has 92, and Lance Briggs, who has 100.

In 2012, Steltz was resigned to a 2-year contract, being the fifth Bears player to sign with the team, with Tim Jennings, Josh McCown, Kellen Davis and Israel Idonije being the first four.