I disagree with many posters on this thread who claim this is long-settled law. School is mandatory and students have been arrested for truancy. That fact is not consistent with a decision that claims stidents “are not in custody”. Either you have to be in school (which brings back a constitutional duty to protect) or you don’t (which vacates all truancy charges).
It's long-settled law. Police departments exist to investigate crimes, apprehend suspects, and assist the prosecutors, not to protect individual citizens from a crime in progress.
Which, as several posters have pointed out, is why we need the 2nd A.
School is mandatory and students have been arrested for truancy.
We're talking about a high school, aren't we? Not mandatory and there's no legal penalty for dropping out altogether.
There is that.
You can also argue that the particular officer had a special duty to the school, as he was assigned to that school.
There will probably be an appeal.
Read the Supreme Court Decisions on it.