NEW YORK (CBSNewYork) — A Staten Island mother stood accused Friday of threatening to blow up her daughter’s school after her daughter failed an exam.

Karen Shearon covered her face with her coat as she left the Staten Island courthouse Friday afternoon.

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When asked if she made the threats against Susan Wagner High School, at 1200 Manor Rd. on the edge of the Manor Heights section of Staten Island, Sharon said no and called the teachers at the school a “liars.”

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Investigators claimed Shearon made the threat after a guidance counselor called to tell her that her daughter failed the Regents Examination.

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Shearon was charged with misdemeanor aggravated harassment.