Seniority Matters

Seniority in teaching matters because there is much documented research showing that teachers must practice up to eight years before they develop efficacy in their practice. In the British VITAE study of 300 teachers in 100 schools, authors Day, Sammons, Stobart, Kingston, and Gu (2007) showed that teachers’ levels of confidence and self-efficacy continue to grow until around the 7 to 8 year mark. After 8 years, teachers reached a significant turning point in their professional development (Day et al., 2007).

The 7th year of teaching is significant as it marks about 10,000 hours of teaching practice. Malcolm Gladwell’s book, Outliers, states that in order to master any skill it takes “to a large extent, a matter of practicing … for a total of around 10,000 hours” (Gladwell, 2008). This make sense because teaching is a complex and challenging profession and as a result it takes over 7 years to develop high levels of professional efficacy. Further to this, as teachers’ professional knowledge grows, so does their professional judgement.

In the early years of teaching, there is a great deal of trial and error in developing practices that work with students. I content that this process, while occurring less often, is an ongoing part of teachers’ practices as teachers must meet the needs of many students. This results in developing a myriad of strategies implemented in tandem with many students’ needs.

I personally know that if I need collegial advice, I approach the most senior teachers in my school, as they have the depth of experience and knowledge to guide me. Further, teachers with extensive experience know that the work of teaching is complex, and it is naïve to believe that simple solutions will address complex challenges with students’ learning.

To imply that older teachers should not be teaching because of declining efficacy is to imply that other professionals such as older doctors, lawyers, and politicians should do the same.

I dedicate this blog to courageous teachers who strive to work with their colleagues and do the best for their students day after day.

I believe that when working collaboratively, teachers are better together.

Collaboratively Yours,

Deb Weston, PhD


Day, C., Sammons, P., Stobart, G., Kingston, A., & Gu, Q. (2007). Teachers matter: Connecting lives, work and effectiveness. Maidenhead, UK: Open University

Gladwell, M. (2008). Outliers: The story of success. Hachette UK.