Prioritize What Matters Most -- Teacher-Student Interactions

Create life-changing experiences through meaningful interactions.

Single Focus. Big Impact.

Our Classroom Assessment Scoring System® (CLASS), the leading quality improvement system for teaching, helps you focus, measure and improve classroom interactions — a key factor proven to drive children’s academic and life-long success.

CLASS not only defines teaching quality through the lens of interactions, it provides the ability to measure and improve the interactions that matter most for student outcomes. And, it’s a journey of continuous improvement that is data-driven and focused on what matters most for student outcomes, interactions.

As you implement CLASS, you will:

  • Focus on high-quality interactions and create a shared understanding of quality in your program
  • Measure the quality of interactions to create a system that enables data-driven improvement
  • Improve teaching quality through tailored and individualized professional development

Over 200 research studies prove children in classrooms with higher CLASS scores demonstrate better social-emotional, cognitive, and academic outcomes.


With a focus on research-based, developmentally appropriate interactions, CLASS is used across all ages, all classroom settings, and alongside any curriculum.


CLASS is the only assessment system that provides teachers the research-proven insights, skills, and strategies they need to improve interactions, the most critical component of their teaching practices.


Our CLASS online platform, myTeachstone, streamlines the data collection, coaching, and professional development processes, making it easier than ever to improve teacher-student interactions.


Create life-changing classroom experiences.

Build shared expectations for high-quality CLASS provides a common, objective, and measurable definition of effective teaching across all age groups.
Develop children’s core critical skills CLASS supports interactions that develop children’s ability to relate, self-regulate, communicate, and think - the core skills critical to academic learning.
Decrease challenging behaviors CLASS promotes building emotional support, and research has shown stronger emotional connections between the teacher and children lowers frequency of problem behaviors.
Make data-driven improvement decisions CLASS gives insight into teaching quality in a single classroom, and across a program, highlighting trends and providing the opportunity to support improvement.
Inform meaningful coaching CLASS data provides the blueprint for creating an individualized coaching and professional development plan that meets the direct need of each teacher.
Minimize the educational opportunity gap CLASS provides the tools to focus, measure and improve effective teaching, which research suggests may close the educational opportunity gap.

Improve interactions, improve child-outcomes.

There is a reason CLASS is the leader in QRIS and the Office of Head Start’s chosen quality assessment tool — it works.

“Of the five individual quality indicators (typically in QRIS systems), the CLASS measure of teacher-child interaction quality consistently was the strongest predictor of children’s learning”

– Science,




Maximize the potential for every child.

Focus, measure and improve classroom interactions -- a key factor proven to drive children’s academic and life-long success.