Willoughby, Ohio (AP) -- A 17-year-old student's pants caught fire when a chemical spill sparked a fire at a vocational high school in Northeast Ohio.

Willoughby Superintendent Keith Miller says welding teacher Robert Gardner on Wednesday asked three students at Willoughby-Eastlake Tech Center to dump metal containers filled with liquid acetone and water on the ground outside. Miller says gardner thought the liquid was all water.

The student's pants caught fire after the acetone splashed on them. Assistant Fire Chief Curt Cook says he was not injured.

Another student was treated at Metrohealth Medical Center in Cleveland for first- and second-degree burns.

The Chief says a Gardner was not injured and a third student had burns on an arm.

Miller says the metal containers had been dumped in the school's rear parking lot.

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