Investigators believe the gunman was targeting a relative with gang ties.
At the vigil, the boy's mother was overcome with emotion, as were many others in the crowd.
Family members say Rodriguez was a straight-A student who planned to go to UC Berkeley. He was a 9th-grader at Jordan High School Freshman Academy.
His killer is still on the loose.
If you have information related to this crime, you're asked to contact police at the Long Beach Police Dept. at (562) 570-7244, or Crime Stoppers (800) 222-TIPS.