Apparently he wasn't in the district anymore, he was home schooled.
The school district is saying that he didn't have any plans to go through with it (typical of them to dumb it down and say everything is hunky dory, everyone is happy and we didn't do anything wrong.)
The news reports I'm reading/hearing are saying that he did have plans but nothing concrete.
He was arrested, and is in a juvenile detention center plus there is more police presence on the campus.
Personally I'd believe the news in this case. The district has a history of not doing things for the students that it should be...
I complained about a teacher who said inappropriate things to me on more than one occasion (even had proof) and they basically said "oh well". Who says that to a 14 year old?