WINONA, Minn.  – In these days of video surveillance, it’s hard to pull off anything on the teacher. After marijuana was smelled wafting from a girls bathroom at the Winona Middle School, a camera was checked on who had been there. A girl admitted that she had been given marijuana in the hallway by a friend, a boy, and that she went into the bathroom and it up.  She dumped remnants of the deed in a trash can, she said. Surveillance video confirmed the deal, as did a trash can check. Then a marijuana stash – 2.8 grams — was found where it had been left by the boy. There was a stern lecture in the principal’s office – and a police citation was issued for drugs possession. This was about 11:20 a.m.