What I want to say, it's a great job you have and you are doing "outstanding" at that job. We need more teachers like you. Yes there's more aspects to scraping than just tearing things apart. Safety has to be a priority with kids and there will be areas of the scrap business they should not be allowed to work with. Keep at it! You are teaching kids at a age, where lessons they learn at that age, will be life long lessons!