Of course, not all teachers act that way. Real confident teachers tend to encourage and prefer creative minds. That said, many teachers are killing creativity without knowing it.
Research has indicated that teachers prefer traits that seem to run counter to creativity, such as conformity and unquestioning acceptance of authority (e.g., Bachtold, 1974; Cropley, 1992; Dettmer, 1981; Getzels & Jackson, 1962; Torrance, 1963). The reason for teachers’ preferences is quite clear creative people tend to have traits that some have referred to as obnoxious (Torrance, 1963).