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Welcome to Kaizen-ISL.

Lead Strong. Transform Schools. Inspire Change.

At Kaizen-ISL, we know leadership is more than a title—it’s a calling. We partner with K-12 school leaders to turn vision into action through continuous improvement, strategic coaching, and systems that stick. With confidence, courage, and purpose, you can lead schools where teachers thrive, and students succeed.

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Welcome to Gedit.

Driving Your Business to New Heights

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Years of Experience
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Leaders Mentored & Coached
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Schools & Organizations Served
About Kaizen-ISL

Guided by Experience, Driven by Purpose

At Kaizen-ISL (Instructionally Strong Leadership, LLC), we believe in the power of continuous improvement. Rooted in the Japanese philosophy of Kaizen, our mission is to create safe spaces where leaders are nurtured, inspired, and empowered to thrive—both personally and professionally.

Intellect

Sharpen your mind with knowledge and strategy to make confident, informed decisions that drive success.

Inspiration

Fuel your passion and purpose with guidance that motivates you to lead with courage and vision.

Instinct

Develop the confidence to trust your inner compass, adapt quickly, and lead with clarity in any situation.

What We Do

Where Leadership Meets Lasting Impact

At Kaizen-ISL, we empower leaders to grow with confidence, courage, and purpose. Through tailored coaching, training, and strategic planning support, we help schools, organizations, and individuals achieve continuous improvement and lasting success.

Leadership Development

Equipping leaders with the skills to inspire, influence, and lead effectively in every environment.

School Transformation

Partnering with schools to close achievement gaps and create pathways to student success.

Instructional Leadership

Strengthening the capacity of principals and educators to drive teaching and learning excellence.

Performance Coaching

Personalized coaching to help leaders unlock potential, overcome challenges, and reach peak performance.

Strategic Planning & Innovation

Helping organizations design forward-thinking strategies and systems that drive growth, innovation, and sustainable success.

Freelance Expert Services

Providing flexible expertise and consulting tailored to corporate, educational, and faith-based needs.

30-Minute Free Consultation

Your journey to better leadership starts here.

Book a free 30-minute session today and discover how personalized coaching can help you unlock your true potential, overcome challenges, and lead with confidence.

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Testimonial

What Our Clients Say

Trusted by educators, executives, and organizations nationwide.

Dr. Doyle has the unique ability to blend effective instructional strategies with structures that monitor both student and staff growth. Her coaching provided a fresh look at instructional leadership and renewed our focus on school-wide expectations, ensuring that progress is purposeful, measurable, and sustained.
Julie Robinson-Lueallen, Principal Lake County Schools
Dr. Doyle taught me how to develop a keen eye for effective instruction and how to grow my teachers through feedback, reflective questioning, and support. She equipped me with systems thinking, practical tools, and coaching protocols that not only improved my own leadership but also created structures for sustainable teacher development and instructional coherence.
William Roberts, Principal Lake County Schools
Working with Dr. Doyle and Kaizen-ISL completely shifted the way I view instructional leadership. Beyond simply conducting walkthroughs, I learned how to connect classroom observations to planning, feedback, and coaching that drive real change. The Kaizen-ISL systems gave me the tools to close the feedback loop, monitor progress, and support teachers with precision. Because of this work, our leadership team is no longer just ‘observing’—we are coaching with purpose, building teacher capacity, and seeing measurable improvements in student outcomes.
Kelly Lewis, Principal Charter School USA
Dr. Doyle helped me understand that walkthroughs are not about compliance, but about coherence. Through her coaching, I developed a clearer lens for what standards-based instruction should look like in every classroom and how to set schoolwide expectations that stick. The Kaizen-ISL protocols equipped my team with structures for data analysis, reflective questioning, and continuous improvement. Our teachers now see walkthroughs as support, not surveillance, and our school culture has shifted toward accountability, collaboration, and results.
Jarrod Anda, Principal CSUSA, Florida
Working with Dr. Doyle has been a game-changer for two of our most vulnerable schools. By introducing a structured coaching protocol and standards-based walkthrough tool, she strengthened leadership capacity and transformed how feedback and data are used to drive instruction. Within a year, 89% of classrooms showed improvement, student growth surged, and both schools are now projected to earn a ‘B’ grade. Dr. Doyle doesn’t just direct—she equips leaders with the tools, confidence, and mindset to sustain change. I highly recommend Dr. Marilyn Doyle and Kaizen-ISL for any organization serious about building strong leadership and accelerating results.
Christina Hamlin, Deputy Director CSUSA Florida
Working with Dr. Doyle has been transformative for our Tier 3 schools. Her guidance in strengthening systems, building teacher capacity, and monitoring practices directly contributed to one school moving out of failing status and another just one-point shy of a C. Dr. Doyle’s relentless focus on being student-centered raised expectations for instructional leadership across our network. The structures she introduced continue to empower leaders to sustain improvement. If you want a thought partner who will challenge and inspire your team to grow, I highly recommend Dr. Marilyn Doyle and Kaizen-ISL.
Kendra Rutledge, Curriculum Specialist North Carolina
Dr. Doyle has helped us clearly define what true Tier 1 instruction looks, sounds, and feels like. By modeling walkthrough protocols, coaching in the moment, and reinforcing strategies such as “circle backs” and closing the feedback loop, she has transformed compliance-driven practices into purposeful, instructional ones. Because of her leadership, planning meetings, PD sessions, and PLCs are now laser-focused on standards and instruction. We are already seeing data gains, and the culture around standards-based instruction has changed dramatically. Though she works directly with only three schools, her coaching and resources have influenced all eleven schools I support. Dr. Doyle has truly been a blessing to our network. If you are looking to break free from stagnation or reverse a downward data trend, I wholeheartedly recommend Dr. Marilyn Doyle with Kaizen-ISL.
Georgia Waddups, Curriculum Specialist CSUSA