By Audrina Bigos

(CBS) — A terrifying day at summer school on the North Side.

Hundreds of kids were in class when bullets struck the Uptown school Christopher House and a man who was walking outside.

CBS 2’s Audrina Bigos reports.

At least 20 children were on the playground when shots were fired from a car Friday morning in the 4700 block of North Winthrop. The children range in age from 6 weeks to 12 years old.

A bullet hole could be observed in a second-floor window. School officials alerted parents about the incident and assured them no children had been harmed.

“It could have easily been a child here today and that’s what’s so scary,” neighbor James Gardner says.

The 19-year-old shooting victim is expected to make a full recovery.

No suspects are in custody.

Administrators say there will be added security and precautions taken Monday when classes resume.