Childs attended Warren High School in Warren, Arkansas where he went to school with future University of Arkansas and Minnesota Vikings teammate Jarius Wright. He was all state selection as a senior in 2007.
As a freshman in 2008, Childs played in 12 games with one start and had 18 receptions for 273 yards and two touchdowns. As a sophomore he started eight of 13 games and led the team with 48 receptions for 894 yards and seven touchdowns. As a junior in 2010, he played in eight games and had 46 receptions for 659 yards and six touchdowns before suffering a season ending patellar tendon injury.
On August 3, 2012, Childs suffered injuries to both knees while at training camp. An MRI revealed that each knee had a torn patellar tendon, as a result of which Childs will miss his entire rookie season. The Vikings waived/injured Childs on August 5, 2012, and he was subsequently reverted to injured reserve on August 8.