unteacher

noun3

1. •
   One who guides students in self-directed learning, a teacher involved in unschooling.

   • I call myself an unteacher. When you do well in my class you get a balloon that reads, " From your unteacher for being a good unstudent." — 1983
2. •
   Someone who helps others unlearn or overcome unhealthy social conditioning.

   • An un-teacher, hopefully—and it is a difficult task that I embark upon, playfully— an un-teacher, hopefully, lets you lead yourselves toward the freedom of your being. — 2006
3. •
   (disapproving) A popular teacher who focuses on fun activities but lacks pedagogical rigor.

   • “Dawson the Doubter,” he calls himself; by this epithet we understand he takes pride in being known — that is a very good quality for an Unteacher, scarcely a recommendation for a teacher . — 1856