How Teachers use wikipedia?

A survey of teachers who instruct American middle and secondary school students finds that digital technologies have become central to their teaching and professionalization. While teachers prohibit or restrict the use of Wikipedia to their students, they widely use in the preparation of their courses. As you say schizophrenic ?

The survey finds that the vast majority of AP and NWP teachers use search engines (99%) and Wikipedia (87%) to find information online. The latter is particularly notable, because both teachers and students mentioned in focus groups that teachers commonly bar students from using Wikipedia in their school assignments.  The survey also finds that almost all of the teachers surveyed use the internet “to do work or research for their job.” The specific ways these teachers use the internet as a tool for professional development and curricular ideas are discussed later in this report.

via Part II: Teachers’ Own Use of the Internet and Mobile Tools | Pew Internet & American Life Project.