(Portland, OR)  --  The Parkrose High School student accused of bringing a loaded shotgun to his campus and pointing it at a classroom full of his peers is pleading not guilty.  Court records show 19-year-old Angel Granado-Díaz pleaded not guilty to charges of reckless endangerment, possession of a firearm and carrying a firearm into a public building during his first court appearance yesterday, which was also his birthday.  Bail was set at 500-thousand dollars.  Witnesses say Díaz appeared in the doorway of a government class on Friday wearing a black trench coat and holding a shotgun.  A security guard tackled him to the ground before any shots were fired.  No injuries were reported.