While all educational leadership is important for the success of students, school principals wield a significant influence. As catalysts for student success, their influence ranges from instructional quality to school culture. And the research consistently demonstrates that effective principals can have a measurable impact on student achievement.
What the Research Says About Educational Leadership
The research on the value that a principal can bring to a campus is very clear and valid. They directly influence school climate and culture by setting high expectations and cultivating an atmosphere of continuous improvement (Leithwood, Day, Sammons, Harris, & Hopkins, 2006). When teachers feel supported, guided, and engaged, their instructional quality improves, which in turn elevates student outcomes.
Effective principals align resources, professional development, and school policies with a focus on enhancing teaching and learning. They also promote collective teacher efficacy—an influential factor with one of the highest effect sizes in John Hattie’s research.
Transformational vs. Instructional Leaders
Hattie also has some significant findings on the most effective type of leader to aspire to be. Most educational leaders have been taught to be transformational leaders. They focus on vision, inspiration, and broad-scale change. They create common goals, buffer external demands, and give teachers autonomy. And these are all good things.
But Hattie’s research shows that the transformational leader has an effect size of only ~0.11, far below the hinge effect size of 0.4. That’s primarily because this type of leader doesn’t focus on teaching and learning.
Instead, an instructional leader emphasizes pedagogical development, teacher support, and direct engagement with the teaching and learning process. Hattie’s synthesis—supported by Robinson, Lloyd, and Rowe (2008)—suggests that instructional leadership has a stronger correlation with student achievement. Instructional leaders are directly involved in guiding curriculum, instruction, and assessment practices. The effect size of an instructional leader? 0.42, almost four times that of the transformational leader.
Effective principals routinely communicate high academic standards and model practices that promote evidence-based teaching. They engage teachers in data-driven decision-making to identify gaps in learning and develop targeted interventions (Hattie, 2009).
How to Be an Instructional Leader
Below are some concrete strategies aligned with Hattie’s findings and other research to bolster leadership effectiveness:
- Prioritize Instructional Leadership Activities
- Allocate Time for Classroom Observations: Schedule regular, brief visits to classrooms and follow up with timely, actionable feedback. This is related to the belief that all teachers can become better with clear feedback and is not related to the teacher evaluation process.
- Engage in Data-Informed Discussions: Lead data reviews to identify trends in student performance and collaborate with teachers on targeted instructional strategies. (Incidentally, identifying the most effective instructional strategies is one of the first things the principal must do. If you would like to learn more about this topic, be sure to check out TCEA’s research-based online courses.)
- Cultivate a Collaborative School Culture
- Foster Professional Learning Communities (PLCs): Encourage teachers to share best practices, analyze student work, and co-develop lesson plans.
- Promote Shared Leadership: Distribute leadership tasks among teacher leaders or department heads, offering them autonomy while maintaining overall vision and standards.
- Provide Effective Feedback and Support
- Offer Specific, Timely Feedback: Align your feedback with clear success criteria and connect it to student learning goals.
- Personalize Professional Development: Tailor training opportunities to individual teachers’ needs, ensuring that each development session connects directly to classroom practice. This definitely should not be a “one size fits all” approach.
- Set and Communicate High Expectations
- Establish Rigorous Goals: Collaborate with faculty to set measurable, ambitious goals that drive learning outcomes. Help teachers to understand the difference between behavior goals and learning goals.
- Highlight Progress: Regularly share data on improvements and celebrate milestones to reinforce collective efficacy and commitment.
- Build Relational Trust
- Be Visible and Approachable: Regularly visit classrooms, hallways, and school events to demonstrate support and openness.
- Active Listening: Encourage input from staff, students, and community members, making it clear that every voice contributes to school improvement.
Building Impact at Scale
Small, consistent actions—like classroom walk-throughs, targeted feedback, and team-based problem-solving—cumulatively translate into meaningful gains in student achievement. Embedding evidence-based leadership practices into daily routines ensures that principals and assistant principals drive sustainable and measurable growth.
References on Educational Leadership
- Hattie, J. (2009). Visible Learning: A Synthesis of Over 800 Meta-Analyses Relating to Achievement. Routledge.
- Hattie, J., & Timperley, H. (2007). The power of feedback. Review of Educational Research, 77(1), 81–112.
- Leithwood, K., Day, C., Sammons, P., Harris, A., & Hopkins, D. (2006). Successful school leadership: What it is and how it influences pupil learning. London: DfES.
- Robinson, V. M. J., Lloyd, C. A., & Rowe, K. J. (2008). The impact of leadership on student outcomes: an analysis of the differential effects of leadership types. Educational Administration Quarterly, 44(5), 635–674.