School officials say the incident at Morgan Park Academy at 2153 W. 111th Street took place around 9 a.m. at Hansen Hall.
The middle school student was rushed to the hospital in stable condition after he fell from a window and landed in the parking lot Friday morning at Morgan Park Academy on 111th Street.
"A lot of my classmates were crying because he's in my class. I was just kind of surprised, it didn't make any sense," said Jillian Dunlap, classmate.
Officials say the unidentified boy was alone at the time of the incident and taken by ambulance to Christ Advocate Medical Center in Oak Lawn. He was conscious and spoke to emergency responders.
"I arrived there at 9 a.m. and as I was parking we noticed the child there and it had just happened, so quickly I called 911 but somebody else already called 911," said Vincent Hermosilla, Morgan Park Academy.
Anxious parents arrived at the school to take their children home. School was not officially canceled but parents and students had the option to leave. But the mother of the victim's classmate says, like other parents we spoke with, that while it's shocking someone could fall out of a third floor bathroom, the school is not necessarily to blame.
"It's a challenging time for a teenager. You know in today's lifestyle and with everything that's going on in society you don't know what's going on with social media and just everything," said Ophelia Carlton, parent.
Police and school officials continue to investigate.