Published peer reviews of Visible Learning:

Arnold Prof I, (2011) A review of Visible Learning, International Review of Education.

Higgins and Simpson, Drs (2011) A review of Visible Learning, British Journal of Educational Studies.

Hooley, Dr N (2013) Making judgments about John Hattie's effect size, Professional Voice, p42-46.

O'Neill Prof John, Letter to the NZ Minister of Education, critical of Hattie's methods.

Emeritus Professor Ivan Snook, et al (2009) Invisible Learnings?: A Commentary on John Hattie's Book - 'Visible Learning: A Synthesis of Over 800 Meta-analyses Relating to Achievement, New Zealand Journal of Educational Studies.

Terhart, Prof Ewald (2011) Has John Hattie really found the holy grail of research on teaching? An extended review of Visible Learning, Journal of Curriculum Studies.

Zyngier, Dr D, (2014) Class size and academic results, with a focus on children from culturally, linguistically and economically disenfranchised communities. Evidence Base.


Salkind, N,  (2006) Encyclopedia of Measurement and Statistics, SAGE.

Smith, G, (2014) Standard Deviations- Flawed assumptions, Tortured data and other ways to lie with statistics, Duckworth Overlook, London.

Detailed On-line Reviews:

Becker, Dr Jonathan, critique of Marzano's research, but very relevant to Hattie's research.

Brown, Neil, Excellent summary of issues with Visible Learning.

DiCerbo, Dr. Kristen, Detailed analysis of Self-report grades.

David Didau - effect size, class size, self-report grades.

Docendo Discimus, Detailed analysis of a number of influences.

Haesler, Dan, details a number of issues, in particular, Class Size.

Ollie Orange, Details of mistakes in Visible Learning

Smythe, Kelvin,  has written extensively on Hattie,

William, Prof Dylan, adds many relevant comments in a variety of online forums.

Other Blogs:

Great summary of problems with Effect Size in education by Nick Rose.