"While we received a lot of tips in this particular case and the community really stepped up and tried to help us, I'm sad to point out that we did not get our target audience to step up," the superintendent said.
Hadiya was fatally shot about a mile north of the president's Kenwood neighborhood home a little more than a week after the King College Prep honor student performed with her school band near Washington during inauguration festivities.
Hadiya's death occurred during the deadliest January in Chicago since 2002. It also came on the heels of a homicide total last year that was the highest since 2008 and the second highest since 2003.
The first lady's attendance at Hadiya's funeral pushed Chicago further into the spotlight of a debate over gun violence that has polarized Congress and led the president to take his plans for gun control on the road to garner more public support. The president is scheduled to appear in Chicago on Friday to talk about violence.
In the days after Hadiya's death, clergy and community leaders raised the $40,000 in reward money for information leading to the arrest and conviction of the teen's killer or killers.
The victim's father acknowledged that true closure will come if Ward and Williams are convicted of the crimes. But the charges, he said, are a good start.
"Right now, I can say to you that the healing can start," Pendleton said.