Several high school students in the Bronx are being treated after an accident in a chemistry lab Wednesday morning.

The President of St. Catherine Academy in Allerton says the teens were taking part in a demonstration around 8:30 a.m. when the students were singed by a flame.

Four students were taken to the hospital. 

All are expected to be okay.  

School officials say no hazardous materials were involved.

Parents were notified by text shortly after the incident.