“If a teacher is not perceived as credible, the students just turn off.” - John Hattie

Teacher Credibility
    John Hattie’s Visible Learning for Teachers (which many have described as the holy grail of teaching), is the result of 15 years research and synthesis over 900 meta-analyses on the influences on achievement that was conducted in classrooms on over 240 million students.

Hattie organized the influences by the effect each one had on student achievement. An effect size of 0.4 is equal to a full year of achievement in a particular subject.  “Within a year, it is expected that the progress should be 0.40.”   Teacher Credibility was calculated to account for a 0.9 effect size. That’s more than double the average effect! 

 “Teacher credibility is vital to learning, and students are very perceptive about knowing which teachers can make a difference.”  In an interview,  Hattie reports what happens if the opposite is true: “If a teacher is not perceived as credible, the students just turn off... If you have one bad teacher, there’s a higher probability of not completing school. Two or three and it’s almost certain.”


What do you think leads to a teacher being credible?  Can you think of a teacher in the past that you did not trust?

If you think being credible is an important trait, then you might want to check out my book because it is definitely credible (it has over 350 references).