(Olympia, WA)  --  A bill that's aimed at preventing school shootings in Washington is awaiting action by a House committee.  State Representative Kevin Parker of Spokane says the measure is modeled after a law in Colorado that was passed after the shooting at Columbine High School, which killed 12 students and one teacher in 1999.  Parker told KING-5 his bill would create an anonymous tip line that Washington students can call to report a threat at their school.  The bill has been approved by the House Appropriations Committee, and is awaiting a hearing by the Rules Committee.