Vonzell Banks, 17, was fatally shot in his chest and back. A 19-year-old man was shot in his foot.
Obama chose to give the commencement at King after the students won the first lady's video competition.
Pendleton's classmates are pushing for a national day of peace to address gun violence.
A South Side park has been renamed in honor of the Chicago teenager who was killed in 2013.
The Chicago Park District plans to add nearly 2 acres to the park.
"We're just hanging in there," said Nathaniel Pendleton on what would have been Hadiya's 17th birthday.
Mayor Emanuel and parents of children killed in gun violence joined Pfleger at an anti-violence rally.
Buckthorn Park would be renamed and expanded as the city tries to lure development to 43rd Street.
Lawrence Sellers will be awarded the Honor Medal from Boy Scouts of America Sunday.
King College Prep students and teachers read poems and sang songs to remember their slain classmate.
"I can still see her smile and beautiful eyes. She was our angel," her mom said.
A check presentation to Hadiya Pendleton's parents from Yolanda Travis is set for Friday.
The City Council Housing Committee approved the $1 use agreement for the charity's use.
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