Many administrators and teachers are finding free software is not free. In software, mostly “free is like a puppy.” The work involved, and the liabilities to your carpets could be significant. In the school software case, to your long-term viability because of stolen identities, stolen and misused data, cost over-runs and more. Everyone should learn about the various business models in the ed-tech world to be more discerning in their choice to use free in some places and pay in others. Learn terms like Lesson Time Used (LTU) and Bots.