The students, who are from all across the country, are taking part in a service program called "Lots of Change." They spent the day cleaning vacant lots. After they finished, students took part in a rally at Sherman Park.
Mayor Daley was also there to discuss efforts to attract residents, resolve community problems... And to also express his gratitude to the two-thousand volunteers.
"I just want to thank you for the inspiration. Now, it's up to this community to be inspired. They see you come in here, and you volunteer. And now it's up to all the residents in this community to keep this park clean," said Mayor Daley.
Friday was a service day for the volunteers who are part of the International Campus Ministry Conference.The event was a response to President Obama's national call to service.