Here’s what the Oregon Constitution has to say about guns;
Section 27. The people shall have the right to bear arms for the defence [sic] of themselves, and the State, but the Military shall be kept in strict subordination to the civil power[.]
Here’s what Oregon State Statutes says about carrying firearms on school property; (edited for brevity)
166.370 (1) Any person who intentionally possesses a loaded or unloaded firearm or any other instrument used as a dangerous weapon, while in or on a public building [including schools], shall upon conviction be guilty of a Class C felony.
3) Subsection (1) of this section does not apply to:
(d) A person who is licensed under ORS 166.291 and 166.292 to carry a concealed handgun.
(statute reference: http://www.leg.state.or.us/ors/166.html )
Looking at the law, the judge decided that school district policy trumps law. (?)