world-shaker:

Here are three:

1. Consumerism: In many cases, teachers themselves have only used computers for entertainment and social interaction. Often, this comes from a consumerist mentality. Books, no matter how poor the quality, might be escapist, but they are seen as “good escape” because “at least people are reading.” This is because reading is viewed culturally as educational while all things techie tend to be viewed culturally as entertainment.
2. Lack of Leadership: When principals worry more about managing liability than pushing for change, technology becomes an easy scapegoat. What if they break it? What if they see inappropriate sites? What if they bully one another on Facebook? It becomes a hassle and to a busy or worried administrator, it’s sometimes easier to create anti-technology policies in the name of safety.
3. Inconsistent Paradigms: I see teachers who say, “What am I supposed to do with eight computers?” or “How should I manage multiple devices?” And yet, the same teachers will do learning centers or use eight sheets of chart paper and have kids work in groups. Teachers worry about off-task behavior online and yet kids pass notes frequently.