A Massachusetts high school student was held without bail after an administrator discovered his journal, which outlined a "Columbine-style" attack.

Sean Ivaldi, 18, was arraigned Friday on a multitude of charges, including causing a school disturbance, four counts of threatening to commit a crime and a felony charge of making a terroristic threat.

The teenager, who attends Stoughton High School, south of Boston, appeared at a hearing Tuesday to assess his danger to the public.

Stoughton Police lieutenant Robert Devine told myFOXboston.com that Ivaldi had no access to firearms, but his journal described using a point system for killing people.

He awarded 20 points for killing a student, 30 points for a teacher and 60 points for a  cop.

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The journal, which was written when Ivaldi was 17, also contained detailed drawings of one of the school buildings with the words "enter B-building at 11:09 and shoot the teacher at the desk."

Ivaldi is due back in court May 8.

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