Children suffer serious burns after outdoor science experiment goes wrong at Sydney school

Authorities said high winds blew material from the experiment onto students at Manly West public school

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Two primary school students suffered serious burns to their face and chest and were taken to hospital after a science experiment conducted outdoors in high winds went wrong at a school on Sydney's northern beaches.

They were among eleven students and one adult - believed to be the teacher - injured in the incident at Manly West public school at about 1.20pm on Monday.