California Student's Sting Allegedly Catches Teacher Stealing

A sophomore conducted an investigation to find who was stealing money from students' backpacks.
2:01 | 02/27/13

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Transcript for California Student's Sting Allegedly Catches Teacher Stealing
stunning story of the teacher who allegedly stole money from her students' backpacks. A sophomore conducting her own sting investigation. And caught it on tape. Abc's gio benitez has the story. Reporter: Is this a teacher rummaging through a bag. This was recorded by a high school student. A student claiming her teacher stole money from students' bags. Right in the school locker room. Something had to be done about this because it's not right to be taking kids' money like that. Reporter: Lyndon high school sophomore, justine betti said she heard stories of things going missing in gym class. We were blaming each other. Reporter: She started thinking like a private eye and set up a sting. Betti hid inside this locker. Even propping up a second phone to catch video from another angle. Watch as the woman in the video appears to take something out of the pink backpack. See there? Something is now in her right hand. And then, she seems to check the pockets of the jeans right next to the bag. But doesn't appear to remove anything. It was tough to believe that she was doing that because she is such a nice teacher. And I really liked her. But I couldn't believe that she was doing something like that. Reporter: The 16-year-old took the video to her dad and school administrator. Now, a full-on investigation is under way. The accused teacher, who is not being identified, is now reportedly on aative leave, pending the investigation. And after a week-long police investigation, this morning, the case is in the hands of the district attorney, who will decide whether to charge the teacher with a crime. Abc affiliate, kxtv, reported they spoke to a sister of the accused teacher. And she told them, quote, she didn't take anything. It looks like she's searching for something. She would never steal. She doesn't need the money. For "good morning america," gio benit benitez, abc news, new york.

This transcript has been automatically generated and may not be 100% accurate.

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