Chartiers Valley High School and Middle School were evacuated for a time this morning after the smell from gas burners in a chemistry lab became strong, a school district official said.
"As a precaution, we evacuated the buildings. There was not a gas leak," district spokeswoman Kara Droney said.
Students returned to classes after the incident.
Jon Schmitz: firstname.lastname@example.org or 412-263-1868.