Jabari Parker and Will Bynum also are expected to attend the event at St. Sabina Church.
A teacher suffered chemical burns, police said.
The Bell, Jones and Brown families have been reuniting every year in the city since 1963.
Kenneth Jackson allegedly thought Michael Flournoy said something to his daughter before the crime.
Vanderbilt's Ro Coleman and Louisville's Corey Ray — Simeon alums — play Friday in the Super Regionals.
Helping cover funeral costs for Flournoy, 16, who was gunned down Saturday night, is the goal.
Morgan Park grad Kyle Davis and Simeon alum Kendall Pollard both won state titles in high school.
His left leg was nearly severed when he was hit by a car, but he still made it to the state finals.
Darius Day, 19, said he's learned to relish the underdog role in his transformation to an elite player.
The state's fourth-ranked heavyweight is 20-0 and also has an extensive martial arts background.
Reuben Norris, 78, is still going strong after 41 years officiating high school, college and pro games.
The Hall of Fame Bears running back said the injured Bulls point guard needed to "work his butt off."
Reed, a junior at Eastern Michigan University, was shot to death in his off-campus apartment.
Chris Harper founded the program to provide academic and athletic fundamentals to local basketball stars.
The Eastern Michigan University wide receiver was killed in a possible robbery, police said.
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