In Year 10 2004, there was huge crackdown on plagiarism in a Science Biotechnology Assignment at my school. I think about HALF THE GRADE, even some of those that you would not expect to plagiarise GOT A ZERO MARK for that assessment report. The thing was, that many tried to copy and paste some bits and pieces from websites and then attempt to reword the paragraphs. Somehow, the science faculty was able to pick that up.
Apparently, the whole school heard about it even teachers from other faculties. Some admitted to it, while others tried to appeal. I don't think anyone actually did overturn the decision successfully. Our year adviser wasn't very happy though....especially with some of those who got caught, being selective students....