Two students and a teacher were injured during a controlled science experiment involving chemicals at a Frisco middle school on Monday afternoon.
A Roach Middle School eighth-grader sustained first- and second-degree burns in the incident, according to a statement from the Frisco school district. The student's name was not released.
The other student and the teacher were treated for minor injuries at the scene.
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The Frisco fire department was called to the school in the 12000 Block of Independence Parkway just after 3:30 p.m., a city representative said.
Firefighters reported that students were conducting a science experiment involving the burning of salts when a small flash fire occurred after a chemical reaction. The chemicals strontium chloride and methyl alcohol were used in combination with a stick lighter during what the district called a controlled experiment.
Strontium chloride is used in fireworks to give off a red color during displays.
Frisco city spokeswoman Dana Baird said there was no fire at the building, but school personnel evacuated the school.
Two students and a teacher were injured. Baird said CareFlite took one student to Parkland Hospital in Dallas for treatment. She was released from the hospital's burn unit late Monday.