19-year-old Noah Serrate pleaded not guilty to charges of willful, deliberate, and premeditated attempted murder.
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He's also charged with felony aggravated mayhem, which comes with an enhancement of special allegations claiming Serrate used a deadly weapon that caused great bodily injury.
The criminal complaint says he used a "meat cleaver-style knife."
Police say the former Monache High student got on campus Monday morning, walked into a classroom and stabbed a 15-year-old girl.
Investigators say he did not know the victim.
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She is now recovering at home.
Serrate is currently in custody with no bail.
He's expected back in court on May 29.